diff options
Diffstat (limited to 'src/analyze')
| -rw-r--r-- | src/analyze/analyze-security.c | 2086 | ||||
| -rw-r--r-- | src/analyze/analyze-security.h | 12 | ||||
| -rw-r--r-- | src/analyze/analyze-verify.c | 287 | ||||
| -rw-r--r-- | src/analyze/analyze-verify.h | 12 | ||||
| -rw-r--r-- | src/analyze/analyze.c | 2053 | ||||
| -rw-r--r-- | src/analyze/meson.build | 9 |
6 files changed, 4459 insertions, 0 deletions
diff --git a/src/analyze/analyze-security.c b/src/analyze/analyze-security.c new file mode 100644 index 0000000..a007ed1 --- /dev/null +++ b/src/analyze/analyze-security.c @@ -0,0 +1,2086 @@ +/* SPDX-License-Identifier: LGPL-2.1+ */ + +#include <sched.h> +#include <sys/utsname.h> + +#include "analyze-security.h" +#include "bus-error.h" +#include "bus-unit-util.h" +#include "bus-util.h" +#include "env-util.h" +#include "format-table.h" +#include "in-addr-util.h" +#include "locale-util.h" +#include "macro.h" +#include "missing.h" +#include "parse-util.h" +#include "path-util.h" +#include "pretty-print.h" +#if HAVE_SECCOMP +# include "seccomp-util.h" +#endif +#include "set.h" +#include "stdio-util.h" +#include "strv.h" +#include "terminal-util.h" +#include "unit-def.h" +#include "unit-name.h" + +struct security_info { + char *id; + char *type; + char *load_state; + char *fragment_path; + bool default_dependencies; + + uint64_t ambient_capabilities; + uint64_t capability_bounding_set; + + char *user; + char **supplementary_groups; + bool dynamic_user; + + bool ip_address_deny_all; + bool ip_address_allow_localhost; + bool ip_address_allow_other; + + char *keyring_mode; + bool lock_personality; + bool memory_deny_write_execute; + bool no_new_privileges; + char *notify_access; + + bool private_devices; + bool private_mounts; + bool private_network; + bool private_tmp; + bool private_users; + + bool protect_control_groups; + bool protect_kernel_modules; + bool protect_kernel_tunables; + + char *protect_home; + char *protect_system; + + bool remove_ipc; + + bool restrict_address_family_inet; + bool restrict_address_family_unix; + bool restrict_address_family_netlink; + bool restrict_address_family_packet; + bool restrict_address_family_other; + + uint64_t restrict_namespaces; + bool restrict_realtime; + + char *root_directory; + char *root_image; + + bool delegate; + char *device_policy; + bool device_allow_non_empty; + + char **system_call_architectures; + + bool system_call_filter_whitelist; + Set *system_call_filter; + + uint32_t _umask; +}; + +struct security_assessor { + const char *id; + const char *description_good; + const char *description_bad; + const char *description_na; + const char *url; + uint64_t weight; + uint64_t range; + int (*assess)(const struct security_assessor *a, const struct security_info *info, const void *data, uint64_t *ret_badness, char **ret_description); + size_t offset; + uint64_t parameter; + bool default_dependencies_only; +}; + +static void security_info_free(struct security_info *i) { + if (!i) + return; + + free(i->id); + free(i->type); + free(i->load_state); + free(i->fragment_path); + + free(i->user); + + free(i->protect_home); + free(i->protect_system); + + free(i->root_directory); + free(i->root_image); + + free(i->keyring_mode); + free(i->notify_access); + + free(i->device_policy); + + strv_free(i->supplementary_groups); + strv_free(i->system_call_architectures); + + set_free_free(i->system_call_filter); +} + +static bool security_info_runs_privileged(const struct security_info *i) { + assert(i); + + if (STRPTR_IN_SET(i->user, "0", "root")) + return true; + + if (i->dynamic_user) + return false; + + return isempty(i->user); +} + +static int assess_bool( + const struct security_assessor *a, + const struct security_info *info, + const void *data, + uint64_t *ret_badness, + char **ret_description) { + + const bool *b = data; + + assert(b); + assert(ret_badness); + assert(ret_description); + + *ret_badness = a->parameter ? *b : !*b; + *ret_description = NULL; + + return 0; +} + +static int assess_user( + const struct security_assessor *a, + const struct security_info *info, + const void *data, + uint64_t *ret_badness, + char **ret_description) { + + _cleanup_free_ char *d = NULL; + uint64_t b; + + assert(ret_badness); + assert(ret_description); + + if (streq_ptr(info->user, NOBODY_USER_NAME)) { + d = strdup("Service runs under as '" NOBODY_USER_NAME "' user, which should not be used for services"); + b = 9; + } else if (info->dynamic_user && !STR_IN_SET(info->user, "0", "root")) { + d = strdup("Service runs under a transient non-root user identity"); + b = 0; + } else if (info->user && !STR_IN_SET(info->user, "0", "root", "")) { + d = strdup("Service runs under a static non-root user identity"); + b = 0; + } else { + *ret_badness = 10; + *ret_description = NULL; + return 0; + } + + if (!d) + return log_oom(); + + *ret_badness = b; + *ret_description = TAKE_PTR(d); + + return 0; +} + +static int assess_protect_home( + const struct security_assessor *a, + const struct security_info *info, + const void *data, + uint64_t *ret_badness, + char **ret_description) { + + const char *description; + uint64_t badness; + char *copy; + int r; + + assert(ret_badness); + assert(ret_description); + + badness = 10; + description = "Service has full access to home directories"; + + r = parse_boolean(info->protect_home); + if (r < 0) { + if (streq_ptr(info->protect_home, "read-only")) { + badness = 5; + description = "Service has read-only access to home directories"; + } else if (streq_ptr(info->protect_home, "tmpfs")) { + badness = 1; + description = "Service has access to fake empty home directories"; + } + } else if (r > 0) { + badness = 0; + description = "Service has no access to home directories"; + } + + copy = strdup(description); + if (!copy) + return log_oom(); + + *ret_badness = badness; + *ret_description = copy; + + return 0; +} + +static int assess_protect_system( + const struct security_assessor *a, + const struct security_info *info, + const void *data, + uint64_t *ret_badness, + char **ret_description) { + + const char *description; + uint64_t badness; + char *copy; + int r; + + assert(ret_badness); + assert(ret_description); + + badness = 10; + description = "Service has full access to the OS file hierarchy"; + + r = parse_boolean(info->protect_system); + if (r < 0) { + if (streq_ptr(info->protect_system, "full")) { + badness = 3; + description = "Service has very limited write access to the OS file hierarchy"; + } else if (streq_ptr(info->protect_system, "strict")) { + badness = 0; + description = "Service has strict read-only access to the OS file hierarchy"; + } + } else if (r > 0) { + badness = 5; + description = "Service has limited write access to the OS file hierarchy"; + } + + copy = strdup(description); + if (!copy) + return log_oom(); + + *ret_badness = badness; + *ret_description = copy; + + return 0; +} + +static int assess_root_directory( + const struct security_assessor *a, + const struct security_info *info, + const void *data, + uint64_t *ret_badness, + char **ret_description) { + + assert(ret_badness); + assert(ret_description); + + *ret_badness = + (isempty(info->root_directory) || + path_equal(info->root_directory, "/")) && + (isempty(info->root_image) || + path_equal(info->root_image, "/")); + *ret_description = NULL; + + return 0; +} + +static int assess_capability_bounding_set( + const struct security_assessor *a, + const struct security_info *info, + const void *data, + uint64_t *ret_badness, + char **ret_description) { + + assert(ret_badness); + assert(ret_description); + + *ret_badness = !!(info->capability_bounding_set & a->parameter); + *ret_description = NULL; + + return 0; +} + +static int assess_umask( + const struct security_assessor *a, + const struct security_info *info, + const void *data, + uint64_t *ret_badness, + char **ret_description) { + + char *copy = NULL; + const char *d; + uint64_t b; + + assert(ret_badness); + assert(ret_description); + + if (!FLAGS_SET(info->_umask, 0002)) { + d = "Files created by service are world-writable by default"; + b = 10; + } else if (!FLAGS_SET(info->_umask, 0004)) { + d = "Files created by service are world-readable by default"; + b = 5; + } else if (!FLAGS_SET(info->_umask, 0020)) { + d = "Files created by service are group-writable by default"; + b = 2; + } else if (!FLAGS_SET(info->_umask, 0040)) { + d = "Files created by service are group-readable by default"; + b = 1; + } else { + d = "Files created by service are accessible only by service's own user by default"; + b = 0; + } + + copy = strdup(d); + if (!copy) + return log_oom(); + + *ret_badness = b; + *ret_description = copy; + + return 0; +} + +static int assess_keyring_mode( + const struct security_assessor *a, + const struct security_info *info, + const void *data, + uint64_t *ret_badness, + char **ret_description) { + + assert(ret_badness); + assert(ret_description); + + *ret_badness = !streq_ptr(info->keyring_mode, "private"); + *ret_description = NULL; + + return 0; +} + +static int assess_notify_access( + const struct security_assessor *a, + const struct security_info *info, + const void *data, + uint64_t *ret_badness, + char **ret_description) { + + assert(ret_badness); + assert(ret_description); + + *ret_badness = streq_ptr(info->notify_access, "all"); + *ret_description = NULL; + + return 0; +} + +static int assess_remove_ipc( + const struct security_assessor *a, + const struct security_info *info, + const void *data, + uint64_t *ret_badness, + char **ret_description) { + + assert(ret_badness); + assert(ret_description); + + if (security_info_runs_privileged(info)) + *ret_badness = UINT64_MAX; + else + *ret_badness = !info->remove_ipc; + + *ret_description = NULL; + return 0; +} + +static int assess_supplementary_groups( + const struct security_assessor *a, + const struct security_info *info, + const void *data, + uint64_t *ret_badness, + char **ret_description) { + + assert(ret_badness); + assert(ret_description); + + if (security_info_runs_privileged(info)) + *ret_badness = UINT64_MAX; + else + *ret_badness = !strv_isempty(info->supplementary_groups); + + *ret_description = NULL; + return 0; +} + +static int assess_restrict_namespaces( + const struct security_assessor *a, + const struct security_info *info, + const void *data, + uint64_t *ret_badness, + char **ret_description) { + + assert(ret_badness); + assert(ret_description); + + *ret_badness = !!(info->restrict_namespaces & a->parameter); + *ret_description = NULL; + + return 0; +} + +static int assess_system_call_architectures( + const struct security_assessor *a, + const struct security_info *info, + const void *data, + uint64_t *ret_badness, + char **ret_description) { + + char *d; + uint64_t b; + + assert(ret_badness); + assert(ret_description); + + if (strv_isempty(info->system_call_architectures)) { + b = 10; + d = strdup("Service may execute system calls with all ABIs"); + } else if (strv_equal(info->system_call_architectures, STRV_MAKE("native"))) { + b = 0; + d = strdup("Service may execute system calls only with native ABI"); + } else { + b = 8; + d = strdup("Service may execute system calls with multiple ABIs"); + } + + if (!d) + return log_oom(); + + *ret_badness = b; + *ret_description = d; + + return 0; +} + +#if HAVE_SECCOMP + +static bool syscall_names_in_filter(Set *s, bool whitelist, const SyscallFilterSet *f) { + const char *syscall; + + NULSTR_FOREACH(syscall, f->value) { + int id; + + if (syscall[0] == '@') { + const SyscallFilterSet *g; + + assert_se(g = syscall_filter_set_find(syscall)); + if (syscall_names_in_filter(s, whitelist, g)) + return true; /* bad! */ + + continue; + } + + /* Let's see if the system call actually exists on this platform, before complaining */ + id = seccomp_syscall_resolve_name(syscall); + if (id < 0) + continue; + + if (set_contains(s, syscall) == whitelist) { + log_debug("Offending syscall filter item: %s", syscall); + return true; /* bad! */ + } + } + + return false; +} + +static int assess_system_call_filter( + const struct security_assessor *a, + const struct security_info *info, + const void *data, + uint64_t *ret_badness, + char **ret_description) { + + const SyscallFilterSet *f; + char *d = NULL; + uint64_t b; + + assert(a); + assert(info); + assert(ret_badness); + assert(ret_description); + + assert(a->parameter < _SYSCALL_FILTER_SET_MAX); + f = syscall_filter_sets + a->parameter; + + if (!info->system_call_filter_whitelist && set_isempty(info->system_call_filter)) { + d = strdup("Service does not filter system calls"); + b = 10; + } else { + bool bad; + + log_debug("Analyzing system call filter, checking against: %s", f->name); + bad = syscall_names_in_filter(info->system_call_filter, info->system_call_filter_whitelist, f); + log_debug("Result: %s", bad ? "bad" : "good"); + + if (info->system_call_filter_whitelist) { + if (bad) { + (void) asprintf(&d, "System call whitelist defined for service, and %s is included", f->name); + b = 9; + } else { + (void) asprintf(&d, "System call whitelist defined for service, and %s is not included", f->name); + b = 0; + } + } else { + if (bad) { + (void) asprintf(&d, "System call blacklist defined for service, and %s is not included", f->name); + b = 10; + } else { + (void) asprintf(&d, "System call blacklist defined for service, and %s is included", f->name); + b = 5; + } + } + } + + if (!d) + return log_oom(); + + *ret_badness = b; + *ret_description = d; + + return 0; +} + +#endif + +static int assess_ip_address_allow( + const struct security_assessor *a, + const struct security_info *info, + const void *data, + uint64_t *ret_badness, + char **ret_description) { + + char *d = NULL; + uint64_t b; + + assert(info); + assert(ret_badness); + assert(ret_description); + + if (!info->ip_address_deny_all) { + d = strdup("Service does not define an IP address whitelist"); + b = 10; + } else if (info->ip_address_allow_other) { + d = strdup("Service defines IP address whitelist with non-localhost entries"); + b = 5; + } else if (info->ip_address_allow_localhost) { + d = strdup("Service defines IP address whitelits with only localhost entries"); + b = 2; + } else { + d = strdup("Service blocks all IP address ranges"); + b = 0; + } + + if (!d) + return log_oom(); + + *ret_badness = b; + *ret_description = d; + + return 0; +} + +static int assess_device_allow( + const struct security_assessor *a, + const struct security_info *info, + const void *data, + uint64_t *ret_badness, + char **ret_description) { + + char *d = NULL; + uint64_t b; + + assert(info); + assert(ret_badness); + assert(ret_description); + + if (STRPTR_IN_SET(info->device_policy, "strict", "closed")) { + + if (info->device_allow_non_empty) { + d = strdup("Service has a device ACL with some special devices"); + b = 5; + } else { + d = strdup("Service has a minimal device ACL"); + b = 0; + } + } else { + d = strdup("Service has no device ACL"); + b = 10; + } + + if (!d) + return log_oom(); + + *ret_badness = b; + *ret_description = d; + + return 0; +} + +static int assess_ambient_capabilities( + const struct security_assessor *a, + const struct security_info *info, + const void *data, + uint64_t *ret_badness, + char **ret_description) { + + assert(ret_badness); + assert(ret_description); + + *ret_badness = info->ambient_capabilities != 0; + *ret_description = NULL; + + return 0; +} + +static const struct security_assessor security_assessor_table[] = { + { + .id = "User=/DynamicUser=", + .description_bad = "Service runs as root user", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#User=", + .weight = 2000, + .range = 10, + .assess = assess_user, + }, + { + .id = "SupplementaryGroups=", + .description_good = "Service has no supplementary groups", + .description_bad = "Service runs with supplementary groups", + .description_na = "Service runs as root, option does not matter", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SupplementaryGroups=", + .weight = 200, + .range = 1, + .assess = assess_supplementary_groups, + }, + { + .id = "PrivateDevices=", + .description_good = "Service has no access to hardware devices", + .description_bad = "Service potentially has access to hardware devices", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#PrivateDevices=", + .weight = 1000, + .range = 1, + .assess = assess_bool, + .offset = offsetof(struct security_info, private_devices), + }, + { + .id = "PrivateMounts=", + .description_good = "Service cannot install system mounts", + .description_bad = "Service may install system mounts", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#PrivateMounts=", + .weight = 1000, + .range = 1, + .assess = assess_bool, + .offset = offsetof(struct security_info, private_mounts), + }, + { + .id = "PrivateNetwork=", + .description_good = "Service has no access to the host's network", + .description_bad = "Service has access to the host's network", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#PrivateNetwork=", + .weight = 2500, + .range = 1, + .assess = assess_bool, + .offset = offsetof(struct security_info, private_network), + }, + { + .id = "PrivateTmp=", + .description_good = "Service has no access to other software's temporary files", + .description_bad = "Service has access to other software's temporary files", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#PrivateTmp=", + .weight = 1000, + .range = 1, + .assess = assess_bool, + .offset = offsetof(struct security_info, private_tmp), + .default_dependencies_only = true, + }, + { + .id = "PrivateUsers=", + .description_good = "Service does not have access to other users", + .description_bad = "Service has access to other users", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#PrivateUsers=", + .weight = 1000, + .range = 1, + .assess = assess_bool, + .offset = offsetof(struct security_info, private_users), + }, + { + .id = "ProtectControlGroups=", + .description_good = "Service cannot modify the control group file system", + .description_bad = "Service may modify to the control group file system", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectControlGroups=", + .weight = 1000, + .range = 1, + .assess = assess_bool, + .offset = offsetof(struct security_info, protect_control_groups), + }, + { + .id = "ProtectKernelModules=", + .description_good = "Service cannot load or read kernel modules", + .description_bad = "Service may load or read kernel modules", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectKernelModules=", + .weight = 1000, + .range = 1, + .assess = assess_bool, + .offset = offsetof(struct security_info, protect_kernel_modules), + }, + { + .id = "ProtectKernelTunables=", + .description_good = "Service cannot alter kernel tunables (/proc/sys, …)", + .description_bad = "Service may alter kernel tunables", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectKernelTunables=", + .weight = 1000, + .range = 1, + .assess = assess_bool, + .offset = offsetof(struct security_info, protect_kernel_tunables), + }, + { + .id = "ProtectHome=", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectHome=", + .weight = 1000, + .range = 10, + .assess = assess_protect_home, + .default_dependencies_only = true, + }, + { + .id = "ProtectSystem=", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectSystem=", + .weight = 1000, + .range = 10, + .assess = assess_protect_system, + .default_dependencies_only = true, + }, + { + .id = "RootDirectory=/RootImage=", + .description_good = "Service has its own root directory/image", + .description_bad = "Service runs within the host's root directory", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RootDirectory=", + .weight = 200, + .range = 1, + .assess = assess_root_directory, + .default_dependencies_only = true, + }, + { + .id = "LockPersonality=", + .description_good = "Service cannot change ABI personality", + .description_bad = "Service may change ABI personality", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#LockPersonality=", + .weight = 100, + .range = 1, + .assess = assess_bool, + .offset = offsetof(struct security_info, lock_personality), + }, + { + .id = "MemoryDenyWriteExecute=", + .description_good = "Service cannot create writable executable memory mappings", + .description_bad = "Service may create writable executable memory mappings", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#MemoryDenyWriteExecute=", + .weight = 100, + .range = 1, + .assess = assess_bool, + .offset = offsetof(struct security_info, memory_deny_write_execute), + }, + { + .id = "NoNewPrivileges=", + .description_good = "Service processes cannot acquire new privileges", + .description_bad = "Service processes may acquire new privileges", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#NoNewPrivileges=", + .weight = 1000, + .range = 1, + .assess = assess_bool, + .offset = offsetof(struct security_info, no_new_privileges), + }, + { + .id = "CapabilityBoundingSet=~CAP_SYS_ADMIN", + .description_good = "Service has no administrator privileges", + .description_bad = "Service has administrator privileges", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", + .weight = 1500, + .range = 1, + .assess = assess_capability_bounding_set, + .parameter = UINT64_C(1) << CAP_SYS_ADMIN, + }, + { + .id = "CapabilityBoundingSet=~CAP_SET(UID|GID|PCAP)", + .description_good = "Service cannot change UID/GID identities/capabilities", + .description_bad = "Service may change UID/GID identities/capabilities", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", + .weight = 1500, + .range = 1, + .assess = assess_capability_bounding_set, + .parameter = (UINT64_C(1) << CAP_SETUID)| + (UINT64_C(1) << CAP_SETGID)| + (UINT64_C(1) << CAP_SETPCAP), + }, + { + .id = "CapabilityBoundingSet=~CAP_SYS_PTRACE", + .description_good = "Service has no ptrace() debugging abilities", + .description_bad = "Service has ptrace() debugging abilities", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", + .weight = 1500, + .range = 1, + .assess = assess_capability_bounding_set, + .parameter = (UINT64_C(1) << CAP_SYS_PTRACE), + }, + { + .id = "CapabilityBoundingSet=~CAP_SYS_TIME", + .description_good = "Service processes cannot change the system clock", + .description_bad = "Service processes may change the system clock", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", + .weight = 1000, + .range = 1, + .assess = assess_capability_bounding_set, + .parameter = UINT64_C(1) << CAP_SYS_TIME, + }, + { + .id = "CapabilityBoundingSet=~CAP_NET_ADMIN", + .description_good = "Service has no network configuration privileges", + .description_bad = "Service has network configuration privileges", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", + .weight = 1000, + .range = 1, + .assess = assess_capability_bounding_set, + .parameter = (UINT64_C(1) << CAP_NET_ADMIN), + }, + { + .id = "CapabilityBoundingSet=~CAP_RAWIO", + .description_good = "Service has no raw I/O access", + .description_bad = "Service has raw I/O access", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", + .weight = 1000, + .range = 1, + .assess = assess_capability_bounding_set, + .parameter = (UINT64_C(1) << CAP_SYS_RAWIO), + }, + { + .id = "CapabilityBoundingSet=~CAP_SYS_MODULE", + .description_good = "Service cannot load kernel modules", + .description_bad = "Service may load kernel modules", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", + .weight = 1000, + .range = 1, + .assess = assess_capability_bounding_set, + .parameter = (UINT64_C(1) << CAP_SYS_MODULE), + }, + { + .id = "CapabilityBoundingSet=~CAP_AUDIT_*", + .description_good = "Service has no audit subsystem access", + .description_bad = "Service has audit subsystem access", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", + .weight = 500, + .range = 1, + .assess = assess_capability_bounding_set, + .parameter = (UINT64_C(1) << CAP_AUDIT_CONTROL) | + (UINT64_C(1) << CAP_AUDIT_READ) | + (UINT64_C(1) << CAP_AUDIT_WRITE), + }, + { + .id = "CapabilityBoundingSet=~CAP_SYSLOG", + .description_good = "Service has no access to kernel logging", + .description_bad = "Service has access to kernel logging", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", + .weight = 500, + .range = 1, + .assess = assess_capability_bounding_set, + .parameter = (UINT64_C(1) << CAP_SYSLOG), + }, + { + .id = "CapabilityBoundingSet=~CAP_SYS_(NICE|RESOURCE)", + .description_good = "Service has no privileges to change resource use parameters", + .description_bad = "Service has privileges to change resource use parameters", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", + .weight = 500, + .range = 1, + .assess = assess_capability_bounding_set, + .parameter = (UINT64_C(1) << CAP_SYS_NICE) | + (UINT64_C(1) << CAP_SYS_RESOURCE), + }, + { + .id = "CapabilityBoundingSet=~CAP_MKNOD", + .description_good = "Service cannot create device nodes", + .description_bad = "Service may create device nodes", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", + .weight = 500, + .range = 1, + .assess = assess_capability_bounding_set, + .parameter = (UINT64_C(1) << CAP_MKNOD), + }, + { + .id = "CapabilityBoundingSet=~CAP_(CHOWN|FSETID|SETFCAP)", + .description_good = "Service cannot change file ownership/access mode/capabilities", + .description_bad = "Service may change file ownership/access mode/capabilities unrestricted", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", + .weight = 1000, + .range = 1, + .assess = assess_capability_bounding_set, + .parameter = (UINT64_C(1) << CAP_CHOWN) | + (UINT64_C(1) << CAP_FSETID) | + (UINT64_C(1) << CAP_SETFCAP), + }, + { + .id = "CapabilityBoundingSet=~CAP_(DAC_*|FOWNER|IPC_OWNER)", + .description_good = "Service cannot override UNIX file/IPC permission checks", + .description_bad = "Service may override UNIX file/IPC permission checks", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", + .weight = 1000, + .range = 1, + .assess = assess_capability_bounding_set, + .parameter = (UINT64_C(1) << CAP_DAC_OVERRIDE) | + (UINT64_C(1) << CAP_DAC_READ_SEARCH) | + (UINT64_C(1) << CAP_FOWNER) | + (UINT64_C(1) << CAP_IPC_OWNER), + }, + { + .id = "CapabilityBoundingSet=~CAP_KILL", + .description_good = "Service cannot send UNIX signals to arbitrary processes", + .description_bad = "Service may send UNIX signals to arbitrary processes", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", + .weight = 500, + .range = 1, + .assess = assess_capability_bounding_set, + .parameter = (UINT64_C(1) << CAP_KILL), + }, + { + .id = "CapabilityBoundingSet=~CAP_NET_(BIND_SERVICE|BROADCAST|RAW)", + .description_good = "Service has no elevated networking privileges", + .description_bad = "Service has elevated networking privileges", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", + .weight = 500, + .range = 1, + .assess = assess_capability_bounding_set, + .parameter = (UINT64_C(1) << CAP_NET_BIND_SERVICE) | + (UINT64_C(1) << CAP_NET_BROADCAST) | + (UINT64_C(1) << CAP_NET_RAW), + }, + { + .id = "CapabilityBoundingSet=~CAP_SYS_BOOT", + .description_good = "Service cannot issue reboot()", + .description_bad = "Service may issue reboot()", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", + .weight = 100, + .range = 1, + .assess = assess_capability_bounding_set, + .parameter = (UINT64_C(1) << CAP_SYS_BOOT), + }, + { + .id = "CapabilityBoundingSet=~CAP_MAC_*", + .description_good = "Service cannot adjust SMACK MAC", + .description_bad = "Service may adjust SMACK MAC", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", + .weight = 100, + .range = 1, + .assess = assess_capability_bounding_set, + .parameter = (UINT64_C(1) << CAP_MAC_ADMIN)| + (UINT64_C(1) << CAP_MAC_OVERRIDE), + }, + { + .id = "CapabilityBoundingSet=~CAP_LINUX_IMMUTABLE", + .description_good = "Service cannot mark files immutable", + .description_bad = "Service may mark files immutable", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", + .weight = 75, + .range = 1, + .assess = assess_capability_bounding_set, + .parameter = (UINT64_C(1) << CAP_LINUX_IMMUTABLE), + }, + { + .id = "CapabilityBoundingSet=~CAP_IPC_LOCK", + .description_good = "Service cannot lock memory into RAM", + .description_bad = "Service may lock memory into RAM", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", + .weight = 50, + .range = 1, + .assess = assess_capability_bounding_set, + .parameter = (UINT64_C(1) << CAP_IPC_LOCK), + }, + { + .id = "CapabilityBoundingSet=~CAP_SYS_CHROOT", + .description_good = "Service cannot issue chroot()", + .description_bad = "Service may issue chroot()", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", + .weight = 50, + .range = 1, + .assess = assess_capability_bounding_set, + .parameter = (UINT64_C(1) << CAP_SYS_CHROOT), + }, + { + .id = "CapabilityBoundingSet=~CAP_BLOCK_SUSPEND", + .description_good = "Service cannot establish wake locks", + .description_bad = "Service may establish wake locks", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", + .weight = 25, + .range = 1, + .assess = assess_capability_bounding_set, + .parameter = (UINT64_C(1) << CAP_BLOCK_SUSPEND), + }, + { + .id = "CapabilityBoundingSet=~CAP_WAKE_ALARM", + .description_good = "Service cannot program timers that wake up the system", + .description_bad = "Service may program timers that wake up the system", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", + .weight = 25, + .range = 1, + .assess = assess_capability_bounding_set, + .parameter = (UINT64_C(1) << CAP_WAKE_ALARM), + }, + { + .id = "CapabilityBoundingSet=~CAP_LEASE", + .description_good = "Service cannot create file leases", + .description_bad = "Service may create file leases", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", + .weight = 25, + .range = 1, + .assess = assess_capability_bounding_set, + .parameter = (UINT64_C(1) << CAP_LEASE), + }, + { + .id = "CapabilityBoundingSet=~CAP_SYS_TTY_CONFIG", + .description_good = "Service cannot issue vhangup()", + .description_bad = "Service may issue vhangup()", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", + .weight = 25, + .range = 1, + .assess = assess_capability_bounding_set, + .parameter = (UINT64_C(1) << CAP_SYS_TTY_CONFIG), + }, + { + .id = "CapabilityBoundingSet=~CAP_SYS_PACCT", + .description_good = "Service cannot use acct()", + .description_bad = "Service may use acct()", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", + .weight = 25, + .range = 1, + .assess = assess_capability_bounding_set, + .parameter = (UINT64_C(1) << CAP_SYS_PACCT), + }, + { + .id = "UMask=", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#UMask=", + .weight = 100, + .range = 10, + .assess = assess_umask, + }, + { + .id = "KeyringMode=", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#KeyringMode=", + .description_good = "Service doesn't share key material with other services", + .description_bad = "Service shares key material with other service", + .weight = 1000, + .range = 1, + .assess = assess_keyring_mode, + }, + { + .id = "NotifyAccess=", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#NotifyAccess=", + .description_good = "Service child processes cannot alter service state", + .description_bad = "Service child processes may alter service state", + .weight = 1000, + .range = 1, + .assess = assess_notify_access, + }, + { + .id = "RemoveIPC=", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RemoveIPC=", + .description_good = "Service user cannot leave SysV IPC objects around", + .description_bad = "Service user may leave SysV IPC objects around", + .description_na = "Service runs as root, option does not apply", + .weight = 100, + .range = 1, + .assess = assess_remove_ipc, + .offset = offsetof(struct security_info, remove_ipc), + }, + { + .id = "Delegate=", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#Delegate=", + .description_good = "Service does not maintain its own delegated control group subtree", + .description_bad = "Service maintains its own delegated control group subtree", + .weight = 100, + .range = 1, + .assess = assess_bool, + .offset = offsetof(struct security_info, delegate), + .parameter = true, /* invert! */ + }, + { + .id = "RestrictRealtime=", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictRealtime=", + .description_good = "Service realtime scheduling access is restricted", + .description_bad = "Service may acquire realtime scheduling", + .weight = 500, + .range = 1, + .assess = assess_bool, + .offset = offsetof(struct security_info, restrict_realtime), + }, + { + .id = "RestrictNamespaces=~CLONE_NEWUSER", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=", + .description_good = "Service cannot create user namespaces", + .description_bad = "Service may create user namespaces", + .weight = 1500, + .range = 1, + .assess = assess_restrict_namespaces, + .parameter = CLONE_NEWUSER, + }, + { + .id = "RestrictNamespaces=~CLONE_NEWNS", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=", + .description_good = "Service cannot create file system namespaces", + .description_bad = "Service may create file system namespaces", + .weight = 500, + .range = 1, + .assess = assess_restrict_namespaces, + .parameter = CLONE_NEWNS, + }, + { + .id = "RestrictNamespaces=~CLONE_NEWIPC", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=", + .description_good = "Service cannot create IPC namespaces", + .description_bad = "Service may create IPC namespaces", + .weight = 500, + .range = 1, + .assess = assess_restrict_namespaces, + .parameter = CLONE_NEWIPC, + }, + { + .id = "RestrictNamespaces=~CLONE_NEWPID", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=", + .description_good = "Service cannot create process namespaces", + .description_bad = "Service may create process namespaces", + .weight = 500, + .range = 1, + .assess = assess_restrict_namespaces, + .parameter = CLONE_NEWPID, + }, + { + .id = "RestrictNamespaces=~CLONE_NEWCGROUP", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=", + .description_good = "Service cannot create cgroup namespaces", + .description_bad = "Service may create cgroup namespaces", + .weight = 500, + .range = 1, + .assess = assess_restrict_namespaces, + .parameter = CLONE_NEWCGROUP, + }, + { + .id = "RestrictNamespaces=~CLONE_NEWNET", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=", + .description_good = "Service cannot create network namespaces", + .description_bad = "Service may create network namespaces", + .weight = 500, + .range = 1, + .assess = assess_restrict_namespaces, + .parameter = CLONE_NEWNET, + }, + { + .id = "RestrictNamespaces=~CLONE_NEWUTS", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=", + .description_good = "Service cannot create hostname namespaces", + .description_bad = "Service may create hostname namespaces", + .weight = 100, + .range = 1, + .assess = assess_restrict_namespaces, + .parameter = CLONE_NEWUTS, + }, + { + .id = "RestrictAddressFamilies=~AF_(INET|INET6)", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictAddressFamilies=", + .description_good = "Service cannot allocate Internet sockets", + .description_bad = "Service may allocate Internet sockets", + .weight = 1500, + .range = 1, + .assess = assess_bool, + .offset = offsetof(struct security_info, restrict_address_family_inet), + }, + { + .id = "RestrictAddressFamilies=~AF_UNIX", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictAddressFamilies=", + .description_good = "Service cannot allocate local sockets", + .description_bad = "Service may allocate local sockets", + .weight = 25, + .range = 1, + .assess = assess_bool, + .offset = offsetof(struct security_info, restrict_address_family_unix), + }, + { + .id = "RestrictAddressFamilies=~AF_NETLINK", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictAddressFamilies=", + .description_good = "Service cannot allocate netlink sockets", + .description_bad = "Service may allocate netlink sockets", + .weight = 200, + .range = 1, + .assess = assess_bool, + .offset = offsetof(struct security_info, restrict_address_family_netlink), + }, + { + .id = "RestrictAddressFamilies=~AF_PACKET", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictAddressFamilies=", + .description_good = "Service cannot allocate packet sockets", + .description_bad = "Service may allocate packet sockets", + .weight = 1000, + .range = 1, + .assess = assess_bool, + .offset = offsetof(struct security_info, restrict_address_family_packet), + }, + { + .id = "RestrictAddressFamilies=~…", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictAddressFamilies=", + .description_good = "Service cannot allocate exotic sockets", + .description_bad = "Service may allocate exotic sockets", + .weight = 1250, + .range = 1, + .assess = assess_bool, + .offset = offsetof(struct security_info, restrict_address_family_other), + }, + { + .id = "SystemCallArchitectures=", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallArchitectures=", + .weight = 1000, + .range = 10, + .assess = assess_system_call_architectures, + }, +#if HAVE_SECCOMP + { + .id = "SystemCallFilter=~@swap", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", + .weight = 1000, + .range = 10, + .assess = assess_system_call_filter, + .parameter = SYSCALL_FILTER_SET_SWAP, + }, + { + .id = "SystemCallFilter=~@obsolete", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", + .weight = 250, + .range = 10, + .assess = assess_system_call_filter, + .parameter = SYSCALL_FILTER_SET_OBSOLETE, + }, + { + .id = "SystemCallFilter=~@clock", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", + .weight = 1000, + .range = 10, + .assess = assess_system_call_filter, + .parameter = SYSCALL_FILTER_SET_CLOCK, + }, + { + .id = "SystemCallFilter=~@cpu-emulation", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", + .weight = 250, + .range = 10, + .assess = assess_system_call_filter, + .parameter = SYSCALL_FILTER_SET_CPU_EMULATION, + }, + { + .id = "SystemCallFilter=~@debug", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", + .weight = 1000, + .range = 10, + .assess = assess_system_call_filter, + .parameter = SYSCALL_FILTER_SET_DEBUG, + }, + { + .id = "SystemCallFilter=~@mount", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", + .weight = 1000, + .range = 10, + .assess = assess_system_call_filter, + .parameter = SYSCALL_FILTER_SET_MOUNT, + }, + { + .id = "SystemCallFilter=~@module", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", + .weight = 1000, + .range = 10, + .assess = assess_system_call_filter, + .parameter = SYSCALL_FILTER_SET_MODULE, + }, + { + .id = "SystemCallFilter=~@raw-io", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", + .weight = 1000, + .range = 10, + .assess = assess_system_call_filter, + .parameter = SYSCALL_FILTER_SET_RAW_IO, + }, + { + .id = "SystemCallFilter=~@reboot", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", + .weight = 1000, + .range = 10, + .assess = assess_system_call_filter, + .parameter = SYSCALL_FILTER_SET_REBOOT, + }, + { + .id = "SystemCallFilter=~@privileged", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", + .weight = 700, + .range = 10, + .assess = assess_system_call_filter, + .parameter = SYSCALL_FILTER_SET_PRIVILEGED, + }, + { + .id = "SystemCallFilter=~@resources", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", + .weight = 700, + .range = 10, + .assess = assess_system_call_filter, + .parameter = SYSCALL_FILTER_SET_RESOURCES, + }, +#endif + { + .id = "IPAddressDeny=", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#IPAddressDeny=", + .weight = 1000, + .range = 10, + .assess = assess_ip_address_allow, + }, + { + .id = "DeviceAllow=", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#DeviceAllow=", + .weight = 1000, + .range = 10, + .assess = assess_device_allow, + }, + { + .id = "AmbientCapabilities=", + .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#AmbientCapabilities=", + .description_good = "Service process does not receive ambient capabilities", + .description_bad = "Service process receives ambient capabilities", + .weight = 500, + .range = 1, + .assess = assess_ambient_capabilities, + }, +}; + +static int assess(const struct security_info *info, Table *overview_table, AnalyzeSecurityFlags flags) { + static const struct { + uint64_t exposure; + const char *name; + const char *color; + SpecialGlyph smiley; + } badness_table[] = { + { 100, "DANGEROUS", ANSI_HIGHLIGHT_RED, SPECIAL_GLYPH_DEPRESSED_SMILEY }, + { 90, "UNSAFE", ANSI_HIGHLIGHT_RED, SPECIAL_GLYPH_UNHAPPY_SMILEY }, + { 75, "EXPOSED", ANSI_HIGHLIGHT_YELLOW, SPECIAL_GLYPH_SLIGHTLY_UNHAPPY_SMILEY }, + { 50, "MEDIUM", NULL, SPECIAL_GLYPH_NEUTRAL_SMILEY }, + { 10, "OK", ANSI_HIGHLIGHT_GREEN, SPECIAL_GLYPH_SLIGHTLY_HAPPY_SMILEY }, + { 1, "SAFE", ANSI_HIGHLIGHT_GREEN, SPECIAL_GLYPH_HAPPY_SMILEY }, + { 0, "PERFECT", ANSI_HIGHLIGHT_GREEN, SPECIAL_GLYPH_ECSTATIC_SMILEY }, + }; + + uint64_t badness_sum = 0, weight_sum = 0, exposure; + _cleanup_(table_unrefp) Table *details_table = NULL; + size_t i; + int r; + + if (!FLAGS_SET(flags, ANALYZE_SECURITY_SHORT)) { + details_table = table_new(" ", "name", "description", "weight", "badness", "range", "exposure"); + if (!details_table) + return log_oom(); + + (void) table_set_sort(details_table, 3, 1, (size_t) -1); + (void) table_set_reverse(details_table, 3, true); + + if (getenv_bool("SYSTEMD_ANALYZE_DEBUG") <= 0) + (void) table_set_display(details_table, 0, 1, 2, 6, (size_t) -1); + } + + for (i = 0; i < ELEMENTSOF(security_assessor_table); i++) { + const struct security_assessor *a = security_assessor_table + i; + _cleanup_free_ char *d = NULL; + uint64_t badness; + void *data; + + data = (uint8_t*) info + a->offset; + + if (a->default_dependencies_only && !info->default_dependencies) { + badness = UINT64_MAX; + d = strdup("Service runs in special boot phase, option does not apply"); + if (!d) + return log_oom(); + } else { + r = a->assess(a, info, data, &badness, &d); + if (r < 0) + return r; + } + + assert(a->range > 0); + + if (badness != UINT64_MAX) { + assert(badness <= a->range); + + badness_sum += DIV_ROUND_UP(badness * a->weight, a->range); + weight_sum += a->weight; + } + + if (details_table) { + const char *checkmark, *description, *color = NULL; + TableCell *cell; + + if (badness == UINT64_MAX) { + checkmark = " "; + description = a->description_na; + color = NULL; + } else if (badness == a->range) { + checkmark = special_glyph(SPECIAL_GLYPH_CROSS_MARK); + description = a->description_bad; + color = ansi_highlight_red(); + } else if (badness == 0) { + checkmark = special_glyph(SPECIAL_GLYPH_CHECK_MARK); + description = a->description_good; + color = ansi_highlight_green(); + } else { + checkmark = special_glyph(SPECIAL_GLYPH_CROSS_MARK); + description = NULL; + color = ansi_highlight_red(); + } + + if (d) + description = d; + + r = table_add_cell_full(details_table, &cell, TABLE_STRING, checkmark, 1, 1, 0, 0, 0); + if (r < 0) + return log_error_errno(r, "Failed to add cell to table: %m"); + if (color) + (void) table_set_color(details_table, cell, color); + + r = table_add_cell(details_table, &cell, TABLE_STRING, a->id); + if (r < 0) + return log_error_errno(r, "Failed to add cell to table: %m"); + if (a->url) + (void) table_set_url(details_table, cell, a->url); + + r = table_add_cell(details_table, NULL, TABLE_STRING, description); + if (r < 0) + return log_error_errno(r, "Failed to add cell to table: %m"); + + r = table_add_cell(details_table, &cell, TABLE_UINT64, &a->weight); + if (r < 0) + return log_error_errno(r, "Failed to add cell to table: %m"); + (void) table_set_align_percent(details_table, cell, 100); + + r = table_add_cell(details_table, &cell, TABLE_UINT64, &badness); + if (r < 0) + return log_error_errno(r, "Failed to add cell to table: %m"); + (void) table_set_align_percent(details_table, cell, 100); + + r = table_add_cell(details_table, &cell, TABLE_UINT64, &a->range); + if (r < 0) + return log_error_errno(r, "Failed to add cell to table: %m"); + (void) table_set_align_percent(details_table, cell, 100); + + r = table_add_cell(details_table, &cell, TABLE_EMPTY, NULL); + if (r < 0) + return log_error_errno(r, "Failed to add cell to table: %m"); + (void) table_set_align_percent(details_table, cell, 100); + } + } + + if (details_table) { + size_t row; + + for (row = 1; row < table_get_rows(details_table); row++) { + char buf[DECIMAL_STR_MAX(uint64_t) + 1 + DECIMAL_STR_MAX(uint64_t) + 1]; + const uint64_t *weight, *badness, *range; + TableCell *cell; + uint64_t x; + + assert_se(weight = table_get_at(details_table, row, 3)); + assert_se(badness = table_get_at(details_table, row, 4)); + assert_se(range = table_get_at(details_table, row, 5)); + + if (*badness == UINT64_MAX || *badness == 0) + continue; + + assert_se(cell = table_get_cell(details_table, row, 6)); + + x = DIV_ROUND_UP(DIV_ROUND_UP(*badness * *weight * 100U, *range), weight_sum); + xsprintf(buf, "%" PRIu64 ".%" PRIu64, x / 10, x % 10); + + r = table_update(details_table, cell, TABLE_STRING, buf); + if (r < 0) + return log_error_errno(r, "Failed to update cell in table: %m"); + } + + r = table_print(details_table, stdout); + if (r < 0) + return log_error_errno(r, "Failed to output table: %m"); + } + + assert(weight_sum > 0); + exposure = DIV_ROUND_UP(badness_sum * 100U, weight_sum); + + for (i = 0; i < ELEMENTSOF(badness_table); i++) + if (exposure >= badness_table[i].exposure) + break; + + assert(i < ELEMENTSOF(badness_table)); + + if (details_table) { + _cleanup_free_ char *clickable = NULL; + const char *name; + + /* If we shall output the details table, also print the brief summary underneath */ + + if (info->fragment_path) { + r = terminal_urlify_path(info->fragment_path, info->id, &clickable); + if (r < 0) + return log_oom(); + + name = clickable; + } else + name = info->id; + + printf("\n%s %sOverall exposure level for %s%s: %s%" PRIu64 ".%" PRIu64 " %s%s %s\n", + special_glyph(SPECIAL_GLYPH_ARROW), + ansi_highlight(), + name, + ansi_normal(), + colors_enabled() ? strempty(badness_table[i].color) : "", + exposure / 10, exposure % 10, + badness_table[i].name, + ansi_normal(), + special_glyph(badness_table[i].smiley)); + } + + fflush(stdout); + + if (overview_table) { + char buf[DECIMAL_STR_MAX(uint64_t) + 1 + DECIMAL_STR_MAX(uint64_t) + 1]; + TableCell *cell; + + r = table_add_cell(overview_table, &cell, TABLE_STRING, info->id); + if (r < 0) + return log_error_errno(r, "Failed to add cell to table: %m"); + if (info->fragment_path) { + _cleanup_free_ char *url = NULL; + + r = file_url_from_path(info->fragment_path, &url); + if (r < 0) + return log_error_errno(r, "Failed to generate URL from path: %m"); + + (void) table_set_url(overview_table, cell, url); + } + + xsprintf(buf, "%" PRIu64 ".%" PRIu64, exposure / 10, exposure % 10); + r = table_add_cell(overview_table, &cell, TABLE_STRING, buf); + if (r < 0) + return log_error_errno(r, "Failed to add cell to table: %m"); + (void) table_set_align_percent(overview_table, cell, 100); + + r = table_add_cell(overview_table, &cell, TABLE_STRING, badness_table[i].name); + if (r < 0) + return log_error_errno(r, "Failed to add cell to table: %m"); + (void) table_set_color(overview_table, cell, strempty(badness_table[i].color)); + + r = table_add_cell(overview_table, NULL, TABLE_STRING, special_glyph(badness_table[i].smiley)); + if (r < 0) + return log_error_errno(r, "Failed to add cell to table: %m"); + } + + return 0; +} + +static int property_read_restrict_address_families( + sd_bus *bus, + const char *member, + sd_bus_message *m, + sd_bus_error *error, + void *userdata) { + + struct security_info *info = userdata; + int whitelist, r; + + assert(bus); + assert(member); + assert(m); + + r = sd_bus_message_enter_container(m, 'r', "bas"); + if (r < 0) + return r; + + r = sd_bus_message_read(m, "b", &whitelist); + if (r < 0) + return r; + + info->restrict_address_family_inet = + info->restrict_address_family_unix = + info->restrict_address_family_netlink = + info->restrict_address_family_packet = + info->restrict_address_family_other = whitelist; + + r = sd_bus_message_enter_container(m, 'a', "s"); + if (r < 0) + return r; + + for (;;) { + const char *name; + + r = sd_bus_message_read(m, "s", &name); + if (r < 0) + return r; + if (r == 0) + break; + + if (STR_IN_SET(name, "AF_INET", "AF_INET6")) + info->restrict_address_family_inet = !whitelist; + else if (streq(name, "AF_UNIX")) + info->restrict_address_family_unix = !whitelist; + else if (streq(name, "AF_NETLINK")) + info->restrict_address_family_netlink = !whitelist; + else if (streq(name, "AF_PACKET")) + info->restrict_address_family_packet = !whitelist; + else + info->restrict_address_family_other = !whitelist; + } + + r = sd_bus_message_exit_container(m); + if (r < 0) + return r; + + return sd_bus_message_exit_container(m); +} + +static int property_read_system_call_filter( + sd_bus *bus, + const char *member, + sd_bus_message *m, + sd_bus_error *error, + void *userdata) { + + struct security_info *info = userdata; + int whitelist, r; + + assert(bus); + assert(member); + assert(m); + + r = sd_bus_message_enter_container(m, 'r', "bas"); + if (r < 0) + return r; + + r = sd_bus_message_read(m, "b", &whitelist); + if (r < 0) + return r; + + info->system_call_filter_whitelist = whitelist; + + r = sd_bus_message_enter_container(m, 'a', "s"); + if (r < 0) + return r; + + for (;;) { + const char *name; + + r = sd_bus_message_read(m, "s", &name); + if (r < 0) + return r; + if (r == 0) + break; + + r = set_ensure_allocated(&info->system_call_filter, &string_hash_ops); + if (r < 0) + return r; + + r = set_put_strdup(info->system_call_filter, name); + if (r < 0) + return r; + } + + r = sd_bus_message_exit_container(m); + if (r < 0) + return r; + + return sd_bus_message_exit_container(m); +} + +static int property_read_ip_address_allow( + sd_bus *bus, + const char *member, + sd_bus_message *m, + sd_bus_error *error, + void *userdata) { + + struct security_info *info = userdata; + bool deny_ipv4 = false, deny_ipv6 = false; + int r; + + assert(bus); + assert(member); + assert(m); + + r = sd_bus_message_enter_container(m, 'a', "(iayu)"); + if (r < 0) + return r; + + for (;;) { + const void *data; + size_t size; + int32_t family; + uint32_t prefixlen; + + r = sd_bus_message_enter_container(m, 'r', "iayu"); + if (r < 0) + return r; + if (r == 0) + break; + + r = sd_bus_message_read(m, "i", &family); + if (r < 0) + return r; + + r = sd_bus_message_read_array(m, 'y', &data, &size); + if (r < 0) + return r; + + r = sd_bus_message_read(m, "u", &prefixlen); + if (r < 0) + return r; + + r = sd_bus_message_exit_container(m); + if (r < 0) + return r; + + if (streq(member, "IPAddressAllow")) { + union in_addr_union u; + + if (family == AF_INET && size == 4 && prefixlen == 8) + memcpy(&u.in, data, size); + else if (family == AF_INET6 && size == 16 && prefixlen == 128) + memcpy(&u.in6, data, size); + else { + info->ip_address_allow_other = true; + continue; + } + + if (in_addr_is_localhost(family, &u)) + info->ip_address_allow_localhost = true; + else + info->ip_address_allow_other = true; + } else { + assert(streq(member, "IPAddressDeny")); + + if (family == AF_INET && size == 4 && prefixlen == 0) + deny_ipv4 = true; + else if (family == AF_INET6 && size == 16 && prefixlen == 0) + deny_ipv6 = true; + } + } + + info->ip_address_deny_all = deny_ipv4 && deny_ipv6; + + return sd_bus_message_exit_container(m); +} + +static int property_read_device_allow( + sd_bus *bus, + const char *member, + sd_bus_message *m, + sd_bus_error *error, + void *userdata) { + + struct security_info *info = userdata; + size_t n = 0; + int r; + + assert(bus); + assert(member); + assert(m); + + r = sd_bus_message_enter_container(m, 'a', "(ss)"); + if (r < 0) + return r; + + for (;;) { + const char *name, *policy; + + r = sd_bus_message_read(m, "(ss)", &name, &policy); + if (r < 0) + return r; + if (r == 0) + break; + + n++; + } + + info->device_allow_non_empty = n > 0; + + return sd_bus_message_exit_container(m); +} + +static int acquire_security_info(sd_bus *bus, const char *name, struct security_info *info, AnalyzeSecurityFlags flags) { + + static const struct bus_properties_map security_map[] = { + { "AmbientCapabilities", "t", NULL, offsetof(struct security_info, ambient_capabilities) }, + { "CapabilityBoundingSet", "t", NULL, offsetof(struct security_info, capability_bounding_set) }, + { "DefaultDependencies", "b", NULL, offsetof(struct security_info, default_dependencies) }, + { "Delegate", "b", NULL, offsetof(struct security_info, delegate) }, + { "DeviceAllow", "a(ss)", property_read_device_allow, 0 }, + { "DevicePolicy", "s", NULL, offsetof(struct security_info, device_policy) }, + { "DynamicUser", "b", NULL, offsetof(struct security_info, dynamic_user) }, + { "FragmentPath", "s", NULL, offsetof(struct security_info, fragment_path) }, + { "IPAddressAllow", "a(iayu)", property_read_ip_address_allow, 0 }, + { "IPAddressDeny", "a(iayu)", property_read_ip_address_allow, 0 }, + { "Id", "s", NULL, offsetof(struct security_info, id) }, + { "KeyringMode", "s", NULL, offsetof(struct security_info, keyring_mode) }, + { "LoadState", "s", NULL, offsetof(struct security_info, load_state) }, + { "LockPersonality", "b", NULL, offsetof(struct security_info, lock_personality) }, + { "MemoryDenyWriteExecute", "b", NULL, offsetof(struct security_info, memory_deny_write_execute) }, + { "NoNewPrivileges", "b", NULL, offsetof(struct security_info, no_new_privileges) }, + { "NotifyAccess", "s", NULL, offsetof(struct security_info, notify_access) }, + { "PrivateDevices", "b", NULL, offsetof(struct security_info, private_devices) }, + { "PrivateMounts", "b", NULL, offsetof(struct security_info, private_mounts) }, + { "PrivateNetwork", "b", NULL, offsetof(struct security_info, private_network) }, + { "PrivateTmp", "b", NULL, offsetof(struct security_info, private_tmp) }, + { "PrivateUsers", "b", NULL, offsetof(struct security_info, private_users) }, + { "ProtectControlGroups", "b", NULL, offsetof(struct security_info, protect_control_groups) }, + { "ProtectHome", "s", NULL, offsetof(struct security_info, protect_home) }, + { "ProtectKernelModules", "b", NULL, offsetof(struct security_info, protect_kernel_modules) }, + { "ProtectKernelTunables", "b", NULL, offsetof(struct security_info, protect_kernel_tunables) }, + { "ProtectSystem", "s", NULL, offsetof(struct security_info, protect_system) }, + { "RemoveIPC", "b", NULL, offsetof(struct security_info, remove_ipc) }, + { "RestrictAddressFamilies", "(bas)", property_read_restrict_address_families, 0 }, + { "RestrictNamespaces", "t", NULL, offsetof(struct security_info, restrict_namespaces) }, + { "RestrictRealtime", "b", NULL, offsetof(struct security_info, restrict_realtime) }, + { "RootDirectory", "s", NULL, offsetof(struct security_info, root_directory) }, + { "RootImage", "s", NULL, offsetof(struct security_info, root_image) }, + { "SupplementaryGroups", "as", NULL, offsetof(struct security_info, supplementary_groups) }, + { "SystemCallArchitectures", "as", NULL, offsetof(struct security_info, system_call_architectures) }, + { "SystemCallFilter", "(as)", property_read_system_call_filter, 0 }, + { "Type", "s", NULL, offsetof(struct security_info, type) }, + { "UMask", "u", NULL, offsetof(struct security_info, _umask) }, + { "User", "s", NULL, offsetof(struct security_info, user) }, + {} + }; + + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_free_ char *path = NULL; + int r; + + /* Note: this mangles *info on failure! */ + + assert(bus); + assert(name); + assert(info); + + path = unit_dbus_path_from_name(name); + if (!path) + return log_oom(); + + r = bus_map_all_properties(bus, + "org.freedesktop.systemd1", + path, + security_map, + BUS_MAP_STRDUP|BUS_MAP_BOOLEAN_AS_BOOL, + &error, + NULL, + info); + if (r < 0) + return log_error_errno(r, "Failed to get unit properties: %s", bus_error_message(&error, r)); + + if (!streq_ptr(info->load_state, "loaded")) { + + if (FLAGS_SET(flags, ANALYZE_SECURITY_ONLY_LOADED)) + return -EMEDIUMTYPE; + + if (streq_ptr(info->load_state, "not-found")) + log_error("Unit %s not found, cannot analyze.", name); + else if (streq_ptr(info->load_state, "masked")) + log_error("Unit %s is masked, cannot analyze.", name); + else + log_error("Unit %s not loaded properly, cannot analyze.", name); + + return -EINVAL; + } + + if (FLAGS_SET(flags, ANALYZE_SECURITY_ONLY_LONG_RUNNING) && streq_ptr(info->type, "oneshot")) + return -EMEDIUMTYPE; + + if (info->private_devices || + info->private_tmp || + info->protect_control_groups || + info->protect_kernel_tunables || + info->protect_kernel_modules || + !streq_ptr(info->protect_home, "no") || + !streq_ptr(info->protect_system, "no") || + info->root_image) + info->private_mounts = true; + + if (info->protect_kernel_modules) + info->capability_bounding_set &= ~(UINT64_C(1) << CAP_SYS_MODULE); + + if (info->private_devices) + info->capability_bounding_set &= ~((UINT64_C(1) << CAP_MKNOD) | + (UINT64_C(1) << CAP_SYS_RAWIO)); + + return 0; +} + +static int analyze_security_one(sd_bus *bus, const char *name, Table* overview_table, AnalyzeSecurityFlags flags) { + _cleanup_(security_info_free) struct security_info info = { + .default_dependencies = true, + .capability_bounding_set = UINT64_MAX, + .restrict_namespaces = UINT64_MAX, + ._umask = 0002, + }; + int r; + + assert(bus); + assert(name); + + r = acquire_security_info(bus, name, &info, flags); + if (r == -EMEDIUMTYPE) /* Ignore this one because not loaded or Type is oneshot */ + return 0; + if (r < 0) + return r; + + r = assess(&info, overview_table, flags); + if (r < 0) + return r; + + return 0; +} + +int analyze_security(sd_bus *bus, char **units, AnalyzeSecurityFlags flags) { + _cleanup_(table_unrefp) Table *overview_table = NULL; + int ret = 0, r; + + assert(bus); + + if (strv_length(units) != 1) { + overview_table = table_new("unit", "exposure", "predicate", "happy"); + if (!overview_table) + return log_oom(); + } + + if (strv_isempty(units)) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_strv_free_ char **list = NULL; + size_t allocated = 0, n = 0; + char **i; + + r = sd_bus_call_method( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "ListUnits", + &error, &reply, + NULL); + if (r < 0) + return log_error_errno(r, "Failed to list units: %s", bus_error_message(&error, r)); + + r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssssouso)"); + if (r < 0) + return bus_log_parse_error(r); + + for (;;) { + UnitInfo info; + char *copy = NULL; + + r = bus_parse_unit_info(reply, &info); + if (r < 0) + return bus_log_parse_error(r); + if (r == 0) + break; + + if (!endswith(info.id, ".service")) + continue; + + if (!GREEDY_REALLOC(list, allocated, n+2)) + return log_oom(); + + copy = strdup(info.id); + if (!copy) + return log_oom(); + + list[n++] = copy; + list[n] = NULL; + } + + strv_sort(list); + + flags |= ANALYZE_SECURITY_SHORT|ANALYZE_SECURITY_ONLY_LOADED|ANALYZE_SECURITY_ONLY_LONG_RUNNING; + + STRV_FOREACH(i, list) { + r = analyze_security_one(bus, *i, overview_table, flags); + if (r < 0 && ret >= 0) + ret = r; + } + + } else { + char **i; + + STRV_FOREACH(i, units) { + _cleanup_free_ char *mangled = NULL, *instance = NULL; + const char *name; + + if (!FLAGS_SET(flags, ANALYZE_SECURITY_SHORT) && i != units) { + putc('\n', stdout); + fflush(stdout); + } + + r = unit_name_mangle_with_suffix(*i, 0, ".service", &mangled); + if (r < 0) + return log_error_errno(r, "Failed to mangle unit name '%s': %m", *i); + + if (!endswith(mangled, ".service")) { + log_error("Unit %s is not a service unit, refusing.", *i); + return -EINVAL; + } + + if (unit_name_is_valid(mangled, UNIT_NAME_TEMPLATE)) { + r = unit_name_replace_instance(mangled, "test-instance", &instance); + if (r < 0) + return log_oom(); + + name = instance; + } else + name = mangled; + + r = analyze_security_one(bus, name, overview_table, flags); + if (r < 0 && ret >= 0) + ret = r; + } + } + + if (overview_table) { + if (!FLAGS_SET(flags, ANALYZE_SECURITY_SHORT)) { + putc('\n', stdout); + fflush(stdout); + } + + r = table_print(overview_table, stdout); + if (r < 0) + return log_error_errno(r, "Failed to output table: %m"); + } + + return ret; +} diff --git a/src/analyze/analyze-security.h b/src/analyze/analyze-security.h new file mode 100644 index 0000000..c00ae7c --- /dev/null +++ b/src/analyze/analyze-security.h @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: LGPL-2.1+ */ +#pragma once + +#include "sd-bus.h" + +typedef enum AnalyzeSecurityFlags { + ANALYZE_SECURITY_SHORT = 1 << 0, + ANALYZE_SECURITY_ONLY_LOADED = 1 << 1, + ANALYZE_SECURITY_ONLY_LONG_RUNNING = 1 << 2, +} AnalyzeSecurityFlags; + +int analyze_security(sd_bus *bus, char **units, AnalyzeSecurityFlags flags); diff --git a/src/analyze/analyze-verify.c b/src/analyze/analyze-verify.c new file mode 100644 index 0000000..1d8a1ed --- /dev/null +++ b/src/analyze/analyze-verify.c @@ -0,0 +1,287 @@ +/* SPDX-License-Identifier: LGPL-2.1+ */ + +#include <stdlib.h> + +#include "alloc-util.h" +#include "all-units.h" +#include "analyze-verify.h" +#include "bus-error.h" +#include "bus-util.h" +#include "log.h" +#include "manager.h" +#include "pager.h" +#include "path-util.h" +#include "strv.h" +#include "unit-name.h" + +static int prepare_filename(const char *filename, char **ret) { + int r; + const char *name; + _cleanup_free_ char *abspath = NULL; + _cleanup_free_ char *dir = NULL; + _cleanup_free_ char *with_instance = NULL; + char *c; + + assert(filename); + assert(ret); + + r = path_make_absolute_cwd(filename, &abspath); + if (r < 0) + return r; + + name = basename(abspath); + if (!unit_name_is_valid(name, UNIT_NAME_ANY)) + return -EINVAL; + + if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) { + r = unit_name_replace_instance(name, "i", &with_instance); + if (r < 0) + return r; + } + + dir = dirname_malloc(abspath); + if (!dir) + return -ENOMEM; + + c = path_join(dir, with_instance ?: name); + if (!c) + return -ENOMEM; + + *ret = c; + return 0; +} + +static int generate_path(char **var, char **filenames) { + const char *old; + char **filename; + + _cleanup_strv_free_ char **ans = NULL; + int r; + + STRV_FOREACH(filename, filenames) { + char *t; + + t = dirname_malloc(*filename); + if (!t) + return -ENOMEM; + + r = strv_consume(&ans, t); + if (r < 0) + return r; + } + + assert_se(strv_uniq(ans)); + + /* First, prepend our directories. Second, if some path was specified, use that, and + * otherwise use the defaults. Any duplicates will be filtered out in path-lookup.c. + * Treat explicit empty path to mean that nothing should be appended. + */ + old = getenv("SYSTEMD_UNIT_PATH"); + if (!streq_ptr(old, "")) { + if (!old) + old = ":"; + + r = strv_extend(&ans, old); + if (r < 0) + return r; + } + + *var = strv_join(ans, ":"); + if (!*var) + return -ENOMEM; + + return 0; +} + +static int verify_socket(Unit *u) { + int r; + + assert(u); + + if (u->type != UNIT_SOCKET) + return 0; + + /* Cannot run this without the service being around */ + + /* This makes sure instance is created if necessary. */ + r = socket_instantiate_service(SOCKET(u)); + if (r < 0) + return log_unit_error_errno(u, r, "Socket cannot be started, failed to create instance: %m"); + + /* This checks both type of sockets */ + if (UNIT_ISSET(SOCKET(u)->service)) { + Service *service; + + service = SERVICE(UNIT_DEREF(SOCKET(u)->service)); + log_unit_debug(u, "Using %s", UNIT(service)->id); + + if (UNIT(service)->load_state != UNIT_LOADED) { + log_unit_error(u, "Service %s not loaded, %s cannot be started.", UNIT(service)->id, u->id); + return -ENOENT; + } + } + + return 0; +} + +static int verify_executable(Unit *u, ExecCommand *exec) { + if (!exec) + return 0; + + if (access(exec->path, X_OK) < 0) + return log_unit_error_errno(u, errno, "Command %s is not executable: %m", exec->path); + + return 0; +} + +static int verify_executables(Unit *u) { + ExecCommand *exec; + int r = 0, k; + unsigned i; + + assert(u); + + exec = u->type == UNIT_SOCKET ? SOCKET(u)->control_command : + u->type == UNIT_MOUNT ? MOUNT(u)->control_command : + u->type == UNIT_SWAP ? SWAP(u)->control_command : NULL; + k = verify_executable(u, exec); + if (k < 0 && r == 0) + r = k; + + if (u->type == UNIT_SERVICE) + for (i = 0; i < ELEMENTSOF(SERVICE(u)->exec_command); i++) { + k = verify_executable(u, SERVICE(u)->exec_command[i]); + if (k < 0 && r == 0) + r = k; + } + + if (u->type == UNIT_SOCKET) + for (i = 0; i < ELEMENTSOF(SOCKET(u)->exec_command); i++) { + k = verify_executable(u, SOCKET(u)->exec_command[i]); + if (k < 0 && r == 0) + r = k; + } + + return r; +} + +static int verify_documentation(Unit *u, bool check_man) { + char **p; + int r = 0, k; + + STRV_FOREACH(p, u->documentation) { + log_unit_debug(u, "Found documentation item: %s", *p); + + if (check_man && startswith(*p, "man:")) { + k = show_man_page(*p + 4, true); + if (k != 0) { + if (k < 0) + log_unit_error_errno(u, k, "Can't show %s: %m", *p + 4); + else { + log_unit_error(u, "Command 'man %s' failed with code %d", *p + 4, k); + k = -ENOEXEC; + } + if (r == 0) + r = k; + } + } + } + + /* Check remote URLs? */ + + return r; +} + +static int verify_unit(Unit *u, bool check_man) { + _cleanup_(sd_bus_error_free) sd_bus_error err = SD_BUS_ERROR_NULL; + int r, k; + + assert(u); + + if (DEBUG_LOGGING) + unit_dump(u, stdout, "\t"); + + log_unit_debug(u, "Creating %s/start job", u->id); + r = manager_add_job(u->manager, JOB_START, u, JOB_REPLACE, &err, NULL); + if (r < 0) + log_unit_error_errno(u, r, "Failed to create %s/start: %s", u->id, bus_error_message(&err, r)); + + k = verify_socket(u); + if (k < 0 && r == 0) + r = k; + + k = verify_executables(u); + if (k < 0 && r == 0) + r = k; + + k = verify_documentation(u, check_man); + if (k < 0 && r == 0) + r = k; + + return r; +} + +int verify_units(char **filenames, UnitFileScope scope, bool check_man, bool run_generators) { + const ManagerTestRunFlags flags = + MANAGER_TEST_RUN_BASIC | + MANAGER_TEST_RUN_ENV_GENERATORS | + run_generators * MANAGER_TEST_RUN_GENERATORS; + + _cleanup_(manager_freep) Manager *m = NULL; + Unit *units[strv_length(filenames)]; + _cleanup_free_ char *var = NULL; + int r = 0, k, i, count = 0; + char **filename; + + if (strv_isempty(filenames)) + return 0; + + /* set the path */ + r = generate_path(&var, filenames); + if (r < 0) + return log_error_errno(r, "Failed to generate unit load path: %m"); + + assert_se(set_unit_path(var) >= 0); + + r = manager_new(scope, flags, &m); + if (r < 0) + return log_error_errno(r, "Failed to initialize manager: %m"); + + log_debug("Starting manager..."); + + r = manager_startup(m, NULL, NULL); + if (r < 0) + return r; + + manager_clear_jobs(m); + + log_debug("Loading remaining units from the command line..."); + + STRV_FOREACH(filename, filenames) { + _cleanup_free_ char *prepared = NULL; + + log_debug("Handling %s...", *filename); + + k = prepare_filename(*filename, &prepared); + if (k < 0) { + log_error_errno(k, "Failed to prepare filename %s: %m", *filename); + if (r == 0) + r = k; + continue; + } + + k = manager_load_startable_unit_or_warn(m, NULL, prepared, &units[count]); + if (k < 0 && r == 0) + r = k; + else + count++; + } + + for (i = 0; i < count; i++) { + k = verify_unit(units[i], check_man); + if (k < 0 && r == 0) + r = k; + } + + return r; +} diff --git a/src/analyze/analyze-verify.h b/src/analyze/analyze-verify.h new file mode 100644 index 0000000..f6b7f54 --- /dev/null +++ b/src/analyze/analyze-verify.h @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: LGPL-2.1+ */ +#pragma once + +#include <stdbool.h> + +#include "path-lookup.h" + +int verify_units( + char **filenames, + UnitFileScope scope, + bool check_man, + bool run_generators); diff --git a/src/analyze/analyze.c b/src/analyze/analyze.c new file mode 100644 index 0000000..3915b66 --- /dev/null +++ b/src/analyze/analyze.c @@ -0,0 +1,2053 @@ +/* SPDX-License-Identifier: LGPL-2.1+ */ +/*** + Copyright © 2013 Simon Peeters +***/ + +#include <getopt.h> +#include <inttypes.h> +#include <locale.h> +#include <stdio.h> +#include <stdlib.h> + +#include "sd-bus.h" + +#include "alloc-util.h" +#include "analyze-security.h" +#include "analyze-verify.h" +#include "build.h" +#include "bus-error.h" +#include "bus-unit-util.h" +#include "bus-util.h" +#include "calendarspec.h" +#include "conf-files.h" +#include "copy.h" +#include "def.h" +#include "fd-util.h" +#include "fileio.h" +#include "glob-util.h" +#include "hashmap.h" +#include "locale-util.h" +#include "log.h" +#include "main-func.h" +#include "pager.h" +#include "parse-util.h" +#include "path-util.h" +#include "pretty-print.h" +#if HAVE_SECCOMP +# include "seccomp-util.h" +#endif +#include "special.h" +#include "strv.h" +#include "strxcpyx.h" +#include "time-util.h" +#include "terminal-util.h" +#include "unit-name.h" +#include "util.h" +#include "verbs.h" + +#define SCALE_X (0.1 / 1000.0) /* pixels per us */ +#define SCALE_Y (20.0) + +#define svg(...) printf(__VA_ARGS__) + +#define svg_bar(class, x1, x2, y) \ + svg(" <rect class=\"%s\" x=\"%.03f\" y=\"%.03f\" width=\"%.03f\" height=\"%.03f\" />\n", \ + (class), \ + SCALE_X * (x1), SCALE_Y * (y), \ + SCALE_X * ((x2) - (x1)), SCALE_Y - 1.0) + +#define svg_text(b, x, y, format, ...) \ + do { \ + svg(" <text class=\"%s\" x=\"%.03f\" y=\"%.03f\">", (b) ? "left" : "right", SCALE_X * (x) + (b ? 5.0 : -5.0), SCALE_Y * (y) + 14.0); \ + svg(format, ## __VA_ARGS__); \ + svg("</text>\n"); \ + } while (false) + +static enum dot { + DEP_ALL, + DEP_ORDER, + DEP_REQUIRE +} arg_dot = DEP_ALL; +static char** arg_dot_from_patterns = NULL; +static char** arg_dot_to_patterns = NULL; +static usec_t arg_fuzz = 0; +static PagerFlags arg_pager_flags = 0; +static BusTransport arg_transport = BUS_TRANSPORT_LOCAL; +static const char *arg_host = NULL; +static UnitFileScope arg_scope = UNIT_FILE_SYSTEM; +static bool arg_man = true; +static bool arg_generators = false; +static const char *arg_root = NULL; + +STATIC_DESTRUCTOR_REGISTER(arg_dot_from_patterns, strv_freep); +STATIC_DESTRUCTOR_REGISTER(arg_dot_to_patterns, strv_freep); + +struct boot_times { + usec_t firmware_time; + usec_t loader_time; + usec_t kernel_time; + usec_t kernel_done_time; + usec_t initrd_time; + usec_t userspace_time; + usec_t finish_time; + usec_t security_start_time; + usec_t security_finish_time; + usec_t generators_start_time; + usec_t generators_finish_time; + usec_t unitsload_start_time; + usec_t unitsload_finish_time; + usec_t initrd_security_start_time; + usec_t initrd_security_finish_time; + usec_t initrd_generators_start_time; + usec_t initrd_generators_finish_time; + usec_t initrd_unitsload_start_time; + usec_t initrd_unitsload_finish_time; + + /* + * If we're analyzing the user instance, all timestamps will be offset + * by its own start-up timestamp, which may be arbitrarily big. + * With "plot", this causes arbitrarily wide output SVG files which almost + * completely consist of empty space. Thus we cancel out this offset. + * + * This offset is subtracted from times above by acquire_boot_times(), + * but it still needs to be subtracted from unit-specific timestamps + * (so it is stored here for reference). + */ + usec_t reverse_offset; +}; + +struct unit_times { + bool has_data; + char *name; + usec_t activating; + usec_t activated; + usec_t deactivated; + usec_t deactivating; + usec_t time; +}; + +struct host_info { + char *hostname; + char *kernel_name; + char *kernel_release; + char *kernel_version; + char *os_pretty_name; + char *virtualization; + char *architecture; +}; + +static int acquire_bus(sd_bus **bus, bool *use_full_bus) { + bool user = arg_scope != UNIT_FILE_SYSTEM; + int r; + + if (use_full_bus && *use_full_bus) { + r = bus_connect_transport(arg_transport, arg_host, user, bus); + if (IN_SET(r, 0, -EHOSTDOWN)) + return r; + + *use_full_bus = false; + } + + return bus_connect_transport_systemd(arg_transport, arg_host, user, bus); +} + +static int bus_get_uint64_property(sd_bus *bus, const char *path, const char *interface, const char *property, uint64_t *val) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + int r; + + assert(bus); + assert(path); + assert(interface); + assert(property); + assert(val); + + r = sd_bus_get_property_trivial( + bus, + "org.freedesktop.systemd1", + path, + interface, + property, + &error, + 't', val); + + if (r < 0) + return log_error_errno(r, "Failed to parse reply: %s", bus_error_message(&error, r)); + + return 0; +} + +static int bus_get_unit_property_strv(sd_bus *bus, const char *path, const char *property, char ***strv) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + int r; + + assert(bus); + assert(path); + assert(property); + assert(strv); + + r = sd_bus_get_property_strv( + bus, + "org.freedesktop.systemd1", + path, + "org.freedesktop.systemd1.Unit", + property, + &error, + strv); + if (r < 0) + return log_error_errno(r, "Failed to get unit property %s: %s", property, bus_error_message(&error, r)); + + return 0; +} + +static int compare_unit_time(const struct unit_times *a, const struct unit_times *b) { + return CMP(b->time, a->time); +} + +static int compare_unit_start(const struct unit_times *a, const struct unit_times *b) { + return CMP(a->activating, b->activating); +} + +static void unit_times_free(struct unit_times *t) { + struct unit_times *p; + + for (p = t; p->has_data; p++) + free(p->name); + free(t); +} + +DEFINE_TRIVIAL_CLEANUP_FUNC(struct unit_times *, unit_times_free); + +static void subtract_timestamp(usec_t *a, usec_t b) { + assert(a); + + if (*a > 0) { + assert(*a >= b); + *a -= b; + } +} + +static int acquire_boot_times(sd_bus *bus, struct boot_times **bt) { + static const struct bus_properties_map property_map[] = { + { "FirmwareTimestampMonotonic", "t", NULL, offsetof(struct boot_times, firmware_time) }, + { "LoaderTimestampMonotonic", "t", NULL, offsetof(struct boot_times, loader_time) }, + { "KernelTimestamp", "t", NULL, offsetof(struct boot_times, kernel_time) }, + { "InitRDTimestampMonotonic", "t", NULL, offsetof(struct boot_times, initrd_time) }, + { "UserspaceTimestampMonotonic", "t", NULL, offsetof(struct boot_times, userspace_time) }, + { "FinishTimestampMonotonic", "t", NULL, offsetof(struct boot_times, finish_time) }, + { "SecurityStartTimestampMonotonic", "t", NULL, offsetof(struct boot_times, security_start_time) }, + { "SecurityFinishTimestampMonotonic", "t", NULL, offsetof(struct boot_times, security_finish_time) }, + { "GeneratorsStartTimestampMonotonic", "t", NULL, offsetof(struct boot_times, generators_start_time) }, + { "GeneratorsFinishTimestampMonotonic", "t", NULL, offsetof(struct boot_times, generators_finish_time) }, + { "UnitsLoadStartTimestampMonotonic", "t", NULL, offsetof(struct boot_times, unitsload_start_time) }, + { "UnitsLoadFinishTimestampMonotonic", "t", NULL, offsetof(struct boot_times, unitsload_finish_time) }, + { "InitRDSecurityStartTimestampMonotonic", "t", NULL, offsetof(struct boot_times, initrd_security_start_time) }, + { "InitRDSecurityFinishTimestampMonotonic", "t", NULL, offsetof(struct boot_times, initrd_security_finish_time) }, + { "InitRDGeneratorsStartTimestampMonotonic", "t", NULL, offsetof(struct boot_times, initrd_generators_start_time) }, + { "InitRDGeneratorsFinishTimestampMonotonic", "t", NULL, offsetof(struct boot_times, initrd_generators_finish_time) }, + { "InitRDUnitsLoadStartTimestampMonotonic", "t", NULL, offsetof(struct boot_times, initrd_unitsload_start_time) }, + { "InitRDUnitsLoadFinishTimestampMonotonic", "t", NULL, offsetof(struct boot_times, initrd_unitsload_finish_time) }, + {}, + }; + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + static struct boot_times times; + static bool cached = false; + int r; + + if (cached) + goto finish; + + assert_cc(sizeof(usec_t) == sizeof(uint64_t)); + + r = bus_map_all_properties( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + property_map, + BUS_MAP_STRDUP, + &error, + NULL, + ×); + if (r < 0) + return log_error_errno(r, "Failed to get timestamp properties: %s", bus_error_message(&error, r)); + + if (times.finish_time <= 0) { + log_error("Bootup is not yet finished (org.freedesktop.systemd1.Manager.FinishTimestampMonotonic=%"PRIu64").\n" + "Please try again later.\n" + "Hint: Use 'systemctl%s list-jobs' to see active jobs", + times.finish_time, + arg_scope == UNIT_FILE_SYSTEM ? "" : " --user"); + return -EINPROGRESS; + } + + if (arg_scope == UNIT_FILE_SYSTEM && times.security_start_time > 0) { + /* security_start_time is set when systemd is not running under container environment. */ + if (times.initrd_time > 0) + times.kernel_done_time = times.initrd_time; + else + times.kernel_done_time = times.userspace_time; + } else { + /* + * User-instance-specific or container-system-specific timestamps processing + * (see comment to reverse_offset in struct boot_times). + */ + times.reverse_offset = times.userspace_time; + + times.firmware_time = times.loader_time = times.kernel_time = times.initrd_time = times.userspace_time = + times.security_start_time = times.security_finish_time = 0; + + subtract_timestamp(×.finish_time, times.reverse_offset); + + subtract_timestamp(×.generators_start_time, times.reverse_offset); + subtract_timestamp(×.generators_finish_time, times.reverse_offset); + + subtract_timestamp(×.unitsload_start_time, times.reverse_offset); + subtract_timestamp(×.unitsload_finish_time, times.reverse_offset); + } + + cached = true; + +finish: + *bt = × + return 0; +} + +static void free_host_info(struct host_info *hi) { + + if (!hi) + return; + + free(hi->hostname); + free(hi->kernel_name); + free(hi->kernel_release); + free(hi->kernel_version); + free(hi->os_pretty_name); + free(hi->virtualization); + free(hi->architecture); + free(hi); +} + +DEFINE_TRIVIAL_CLEANUP_FUNC(struct host_info*, free_host_info); + +static int acquire_time_data(sd_bus *bus, struct unit_times **out) { + static const struct bus_properties_map property_map[] = { + { "InactiveExitTimestampMonotonic", "t", NULL, offsetof(struct unit_times, activating) }, + { "ActiveEnterTimestampMonotonic", "t", NULL, offsetof(struct unit_times, activated) }, + { "ActiveExitTimestampMonotonic", "t", NULL, offsetof(struct unit_times, deactivating) }, + { "InactiveEnterTimestampMonotonic", "t", NULL, offsetof(struct unit_times, deactivated) }, + {}, + }; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(unit_times_freep) struct unit_times *unit_times = NULL; + struct boot_times *boot_times = NULL; + size_t allocated = 0, c = 0; + UnitInfo u; + int r; + + r = acquire_boot_times(bus, &boot_times); + if (r < 0) + return r; + + r = sd_bus_call_method( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "ListUnits", + &error, &reply, + NULL); + if (r < 0) + return log_error_errno(r, "Failed to list units: %s", bus_error_message(&error, r)); + + r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssssouso)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = bus_parse_unit_info(reply, &u)) > 0) { + struct unit_times *t; + + if (!GREEDY_REALLOC(unit_times, allocated, c+2)) + return log_oom(); + + unit_times[c+1].has_data = false; + t = &unit_times[c]; + t->name = NULL; + + assert_cc(sizeof(usec_t) == sizeof(uint64_t)); + + r = bus_map_all_properties( + bus, + "org.freedesktop.systemd1", + u.unit_path, + property_map, + BUS_MAP_STRDUP, + &error, + NULL, + t); + if (r < 0) + return log_error_errno(r, "Failed to get timestamp properties of unit %s: %s", u.id, bus_error_message(&error, r)); + + subtract_timestamp(&t->activating, boot_times->reverse_offset); + subtract_timestamp(&t->activated, boot_times->reverse_offset); + subtract_timestamp(&t->deactivating, boot_times->reverse_offset); + subtract_timestamp(&t->deactivated, boot_times->reverse_offset); + + if (t->activated >= t->activating) + t->time = t->activated - t->activating; + else if (t->deactivated >= t->activating) + t->time = t->deactivated - t->activating; + else + t->time = 0; + + if (t->activating == 0) + continue; + + t->name = strdup(u.id); + if (!t->name) + return log_oom(); + + t->has_data = true; + c++; + } + if (r < 0) + return bus_log_parse_error(r); + + *out = TAKE_PTR(unit_times); + return c; +} + +static int acquire_host_info(sd_bus *bus, struct host_info **hi) { + static const struct bus_properties_map hostname_map[] = { + { "Hostname", "s", NULL, offsetof(struct host_info, hostname) }, + { "KernelName", "s", NULL, offsetof(struct host_info, kernel_name) }, + { "KernelRelease", "s", NULL, offsetof(struct host_info, kernel_release) }, + { "KernelVersion", "s", NULL, offsetof(struct host_info, kernel_version) }, + { "OperatingSystemPrettyName", "s", NULL, offsetof(struct host_info, os_pretty_name) }, + {} + }; + + static const struct bus_properties_map manager_map[] = { + { "Virtualization", "s", NULL, offsetof(struct host_info, virtualization) }, + { "Architecture", "s", NULL, offsetof(struct host_info, architecture) }, + {} + }; + + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_flush_close_unrefp) sd_bus *system_bus = NULL; + _cleanup_(free_host_infop) struct host_info *host; + int r; + + host = new0(struct host_info, 1); + if (!host) + return log_oom(); + + if (arg_scope != UNIT_FILE_SYSTEM) { + r = bus_connect_transport(arg_transport, arg_host, false, &system_bus); + if (r < 0) { + log_debug_errno(r, "Failed to connect to system bus, ignoring: %m"); + goto manager; + } + } + + r = bus_map_all_properties(system_bus ?: bus, + "org.freedesktop.hostname1", + "/org/freedesktop/hostname1", + hostname_map, + BUS_MAP_STRDUP, + &error, + NULL, + host); + if (r < 0) { + log_debug_errno(r, "Failed to get host information from systemd-hostnamed, ignoring: %s", bus_error_message(&error, r)); + sd_bus_error_free(&error); + } + +manager: + r = bus_map_all_properties(bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + manager_map, + BUS_MAP_STRDUP, + &error, + NULL, + host); + if (r < 0) + return log_error_errno(r, "Failed to get host information from systemd: %s", bus_error_message(&error, r)); + + *hi = TAKE_PTR(host); + + return 0; +} + +static int pretty_boot_time(sd_bus *bus, char **_buf) { + char ts[FORMAT_TIMESPAN_MAX]; + struct boot_times *t; + static char buf[4096]; + size_t size; + char *ptr; + int r; + usec_t activated_time = USEC_INFINITY; + _cleanup_free_ char* path = NULL, *unit_id = NULL; + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + + r = acquire_boot_times(bus, &t); + if (r < 0) + return r; + + path = unit_dbus_path_from_name(SPECIAL_DEFAULT_TARGET); + if (!path) + return log_oom(); + + r = sd_bus_get_property_string( + bus, + "org.freedesktop.systemd1", + path, + "org.freedesktop.systemd1.Unit", + "Id", + &error, + &unit_id); + if (r < 0) { + log_error_errno(r, "default.target doesn't seem to exist: %s", bus_error_message(&error, r)); + unit_id = NULL; + } + + r = bus_get_uint64_property(bus, path, + "org.freedesktop.systemd1.Unit", + "ActiveEnterTimestampMonotonic", + &activated_time); + if (r < 0) { + log_info_errno(r, "Could not get time to reach default.target, ignoring: %m"); + activated_time = USEC_INFINITY; + } + + ptr = buf; + size = sizeof(buf); + + size = strpcpyf(&ptr, size, "Startup finished in "); + if (t->firmware_time > 0) + size = strpcpyf(&ptr, size, "%s (firmware) + ", format_timespan(ts, sizeof(ts), t->firmware_time - t->loader_time, USEC_PER_MSEC)); + if (t->loader_time > 0) + size = strpcpyf(&ptr, size, "%s (loader) + ", format_timespan(ts, sizeof(ts), t->loader_time, USEC_PER_MSEC)); + if (t->kernel_done_time > 0) + size = strpcpyf(&ptr, size, "%s (kernel) + ", format_timespan(ts, sizeof(ts), t->kernel_done_time, USEC_PER_MSEC)); + if (t->initrd_time > 0) + size = strpcpyf(&ptr, size, "%s (initrd) + ", format_timespan(ts, sizeof(ts), t->userspace_time - t->initrd_time, USEC_PER_MSEC)); + + size = strpcpyf(&ptr, size, "%s (userspace) ", format_timespan(ts, sizeof(ts), t->finish_time - t->userspace_time, USEC_PER_MSEC)); + if (t->kernel_done_time > 0) + strpcpyf(&ptr, size, "= %s ", format_timespan(ts, sizeof(ts), t->firmware_time + t->finish_time, USEC_PER_MSEC)); + + if (unit_id && activated_time > 0 && activated_time != USEC_INFINITY) { + usec_t base = t->userspace_time > 0 ? t->userspace_time : t->reverse_offset; + + size = strpcpyf(&ptr, size, "\n%s reached after %s in userspace", unit_id, + format_timespan(ts, sizeof(ts), activated_time - base, USEC_PER_MSEC)); + } else if (unit_id && activated_time == 0) + size = strpcpyf(&ptr, size, "\n%s was never reached", unit_id); + else if (unit_id && activated_time == USEC_INFINITY) + size = strpcpyf(&ptr, size, "\nCould not get time to reach %s.", unit_id); + else if (!unit_id) + size = strpcpyf(&ptr, size, "\ncould not find default.target"); + + ptr = strdup(buf); + if (!ptr) + return log_oom(); + + *_buf = ptr; + return 0; +} + +static void svg_graph_box(double height, double begin, double end) { + long long i; + + /* outside box, fill */ + svg("<rect class=\"box\" x=\"0\" y=\"0\" width=\"%.03f\" height=\"%.03f\" />\n", + SCALE_X * (end - begin), SCALE_Y * height); + + for (i = ((long long) (begin / 100000)) * 100000; i <= end; i+=100000) { + /* lines for each second */ + if (i % 5000000 == 0) + svg(" <line class=\"sec5\" x1=\"%.03f\" y1=\"0\" x2=\"%.03f\" y2=\"%.03f\" />\n" + " <text class=\"sec\" x=\"%.03f\" y=\"%.03f\" >%.01fs</text>\n", + SCALE_X * i, SCALE_X * i, SCALE_Y * height, SCALE_X * i, -5.0, 0.000001 * i); + else if (i % 1000000 == 0) + svg(" <line class=\"sec1\" x1=\"%.03f\" y1=\"0\" x2=\"%.03f\" y2=\"%.03f\" />\n" + " <text class=\"sec\" x=\"%.03f\" y=\"%.03f\" >%.01fs</text>\n", + SCALE_X * i, SCALE_X * i, SCALE_Y * height, SCALE_X * i, -5.0, 0.000001 * i); + else + svg(" <line class=\"sec01\" x1=\"%.03f\" y1=\"0\" x2=\"%.03f\" y2=\"%.03f\" />\n", + SCALE_X * i, SCALE_X * i, SCALE_Y * height); + } +} + +static int plot_unit_times(struct unit_times *u, double width, int y) { + char ts[FORMAT_TIMESPAN_MAX]; + bool b; + + if (!u->name) + return 0; + + svg_bar("activating", u->activating, u->activated, y); + svg_bar("active", u->activated, u->deactivating, y); + svg_bar("deactivating", u->deactivating, u->deactivated, y); + + /* place the text on the left if we have passed the half of the svg width */ + b = u->activating * SCALE_X < width / 2; + if (u->time) + svg_text(b, u->activating, y, "%s (%s)", + u->name, format_timespan(ts, sizeof(ts), u->time, USEC_PER_MSEC)); + else + svg_text(b, u->activating, y, "%s", u->name); + + return 1; +} + +static int analyze_plot(int argc, char *argv[], void *userdata) { + _cleanup_(free_host_infop) struct host_info *host = NULL; + _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; + _cleanup_(unit_times_freep) struct unit_times *times = NULL; + _cleanup_free_ char *pretty_times = NULL; + bool use_full_bus = arg_scope == UNIT_FILE_SYSTEM; + struct boot_times *boot; + struct unit_times *u; + int n, m = 1, y = 0, r; + double width; + + r = acquire_bus(&bus, &use_full_bus); + if (r < 0) + return log_error_errno(r, "Failed to create bus connection: %m"); + + n = acquire_boot_times(bus, &boot); + if (n < 0) + return n; + + n = pretty_boot_time(bus, &pretty_times); + if (n < 0) + return n; + + if (use_full_bus || arg_scope != UNIT_FILE_SYSTEM) { + n = acquire_host_info(bus, &host); + if (n < 0) + return n; + } + + n = acquire_time_data(bus, ×); + if (n <= 0) + return n; + + typesafe_qsort(times, n, compare_unit_start); + + width = SCALE_X * (boot->firmware_time + boot->finish_time); + if (width < 800.0) + width = 800.0; + + if (boot->firmware_time > boot->loader_time) + m++; + if (boot->loader_time > 0) { + m++; + if (width < 1000.0) + width = 1000.0; + } + if (boot->initrd_time > 0) + m++; + if (boot->kernel_done_time > 0) + m++; + + for (u = times; u->has_data; u++) { + double text_start, text_width; + + if (u->activating > boot->finish_time) { + u->name = mfree(u->name); + continue; + } + + /* If the text cannot fit on the left side then + * increase the svg width so it fits on the right. + * TODO: calculate the text width more accurately */ + text_width = 8.0 * strlen(u->name); + text_start = (boot->firmware_time + u->activating) * SCALE_X; + if (text_width > text_start && text_width + text_start > width) + width = text_width + text_start; + + if (u->deactivated > u->activating && + u->deactivated <= boot->finish_time && + u->activated == 0 && u->deactivating == 0) + u->activated = u->deactivating = u->deactivated; + if (u->activated < u->activating || u->activated > boot->finish_time) + u->activated = boot->finish_time; + if (u->deactivating < u->activated || u->deactivating > boot->finish_time) + u->deactivating = boot->finish_time; + if (u->deactivated < u->deactivating || u->deactivated > boot->finish_time) + u->deactivated = boot->finish_time; + m++; + } + + svg("<?xml version=\"1.0\" standalone=\"no\"?>\n" + "<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\" " + "\"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n"); + + svg("<svg width=\"%.0fpx\" height=\"%.0fpx\" version=\"1.1\" " + "xmlns=\"http://www.w3.org/2000/svg\">\n\n", + 80.0 + width, 150.0 + (m * SCALE_Y) + + 5 * SCALE_Y /* legend */); + + /* write some basic info as a comment, including some help */ + svg("<!-- This file is a systemd-analyze SVG file. It is best rendered in a -->\n" + "<!-- browser such as Chrome, Chromium or Firefox. Other applications -->\n" + "<!-- that render these files properly but much slower are ImageMagick, -->\n" + "<!-- gimp, inkscape, etc. To display the files on your system, just -->\n" + "<!-- point your browser to this file. -->\n\n" + "<!-- This plot was generated by systemd-analyze version %-16.16s -->\n\n", GIT_VERSION); + + /* style sheet */ + svg("<defs>\n <style type=\"text/css\">\n <![CDATA[\n" + " rect { stroke-width: 1; stroke-opacity: 0; }\n" + " rect.background { fill: rgb(255,255,255); }\n" + " rect.activating { fill: rgb(255,0,0); fill-opacity: 0.7; }\n" + " rect.active { fill: rgb(200,150,150); fill-opacity: 0.7; }\n" + " rect.deactivating { fill: rgb(150,100,100); fill-opacity: 0.7; }\n" + " rect.kernel { fill: rgb(150,150,150); fill-opacity: 0.7; }\n" + " rect.initrd { fill: rgb(150,150,150); fill-opacity: 0.7; }\n" + " rect.firmware { fill: rgb(150,150,150); fill-opacity: 0.7; }\n" + " rect.loader { fill: rgb(150,150,150); fill-opacity: 0.7; }\n" + " rect.userspace { fill: rgb(150,150,150); fill-opacity: 0.7; }\n" + " rect.security { fill: rgb(144,238,144); fill-opacity: 0.7; }\n" + " rect.generators { fill: rgb(102,204,255); fill-opacity: 0.7; }\n" + " rect.unitsload { fill: rgb( 82,184,255); fill-opacity: 0.7; }\n" + " rect.box { fill: rgb(240,240,240); stroke: rgb(192,192,192); }\n" + " line { stroke: rgb(64,64,64); stroke-width: 1; }\n" + "// line.sec1 { }\n" + " line.sec5 { stroke-width: 2; }\n" + " line.sec01 { stroke: rgb(224,224,224); stroke-width: 1; }\n" + " text { font-family: Verdana, Helvetica; font-size: 14px; }\n" + " text.left { font-family: Verdana, Helvetica; font-size: 14px; text-anchor: start; }\n" + " text.right { font-family: Verdana, Helvetica; font-size: 14px; text-anchor: end; }\n" + " text.sec { font-size: 10px; }\n" + " ]]>\n </style>\n</defs>\n\n"); + + svg("<rect class=\"background\" width=\"100%%\" height=\"100%%\" />\n"); + svg("<text x=\"20\" y=\"50\">%s</text>", pretty_times); + if (host) + svg("<text x=\"20\" y=\"30\">%s %s (%s %s %s) %s %s</text>", + isempty(host->os_pretty_name) ? "Linux" : host->os_pretty_name, + strempty(host->hostname), + strempty(host->kernel_name), + strempty(host->kernel_release), + strempty(host->kernel_version), + strempty(host->architecture), + strempty(host->virtualization)); + + svg("<g transform=\"translate(%.3f,100)\">\n", 20.0 + (SCALE_X * boot->firmware_time)); + svg_graph_box(m, -(double) boot->firmware_time, boot->finish_time); + + if (boot->firmware_time > 0) { + svg_bar("firmware", -(double) boot->firmware_time, -(double) boot->loader_time, y); + svg_text(true, -(double) boot->firmware_time, y, "firmware"); + y++; + } + if (boot->loader_time > 0) { + svg_bar("loader", -(double) boot->loader_time, 0, y); + svg_text(true, -(double) boot->loader_time, y, "loader"); + y++; + } + if (boot->kernel_done_time > 0) { + svg_bar("kernel", 0, boot->kernel_done_time, y); + svg_text(true, 0, y, "kernel"); + y++; + } + if (boot->initrd_time > 0) { + svg_bar("initrd", boot->initrd_time, boot->userspace_time, y); + if (boot->initrd_security_start_time < boot->initrd_security_finish_time) + svg_bar("security", boot->initrd_security_start_time, boot->initrd_security_finish_time, y); + if (boot->initrd_generators_start_time < boot->initrd_generators_finish_time) + svg_bar("generators", boot->initrd_generators_start_time, boot->initrd_generators_finish_time, y); + if (boot->initrd_unitsload_start_time < boot->initrd_unitsload_finish_time) + svg_bar("unitsload", boot->initrd_unitsload_start_time, boot->initrd_unitsload_finish_time, y); + svg_text(true, boot->initrd_time, y, "initrd"); + y++; + } + + for (u = times; u->has_data; u++) { + if (u->activating >= boot->userspace_time) + break; + + y += plot_unit_times(u, width, y); + } + + svg_bar("active", boot->userspace_time, boot->finish_time, y); + if (boot->security_start_time > 0) + svg_bar("security", boot->security_start_time, boot->security_finish_time, y); + svg_bar("generators", boot->generators_start_time, boot->generators_finish_time, y); + svg_bar("unitsload", boot->unitsload_start_time, boot->unitsload_finish_time, y); + svg_text(true, boot->userspace_time, y, "systemd"); + y++; + + for (; u->has_data; u++) + y += plot_unit_times(u, width, y); + + svg("</g>\n"); + + /* Legend */ + svg("<g transform=\"translate(20,100)\">\n"); + y++; + svg_bar("activating", 0, 300000, y); + svg_text(true, 400000, y, "Activating"); + y++; + svg_bar("active", 0, 300000, y); + svg_text(true, 400000, y, "Active"); + y++; + svg_bar("deactivating", 0, 300000, y); + svg_text(true, 400000, y, "Deactivating"); + y++; + if (boot->security_start_time > 0) { + svg_bar("security", 0, 300000, y); + svg_text(true, 400000, y, "Setting up security module"); + y++; + } + svg_bar("generators", 0, 300000, y); + svg_text(true, 400000, y, "Generators"); + y++; + svg_bar("unitsload", 0, 300000, y); + svg_text(true, 400000, y, "Loading unit files"); + y++; + + svg("</g>\n\n"); + + svg("</svg>\n"); + + return 0; +} + +static int list_dependencies_print(const char *name, unsigned level, unsigned branches, + bool last, struct unit_times *times, struct boot_times *boot) { + unsigned i; + char ts[FORMAT_TIMESPAN_MAX], ts2[FORMAT_TIMESPAN_MAX]; + + for (i = level; i != 0; i--) + printf("%s", special_glyph(branches & (1 << (i-1)) ? SPECIAL_GLYPH_TREE_VERTICAL : SPECIAL_GLYPH_TREE_SPACE)); + + printf("%s", special_glyph(last ? SPECIAL_GLYPH_TREE_RIGHT : SPECIAL_GLYPH_TREE_BRANCH)); + + if (times) { + if (times->time > 0) + printf("%s%s @%s +%s%s", ansi_highlight_red(), name, + format_timespan(ts, sizeof(ts), times->activating - boot->userspace_time, USEC_PER_MSEC), + format_timespan(ts2, sizeof(ts2), times->time, USEC_PER_MSEC), ansi_normal()); + else if (times->activated > boot->userspace_time) + printf("%s @%s", name, format_timespan(ts, sizeof(ts), times->activated - boot->userspace_time, USEC_PER_MSEC)); + else + printf("%s", name); + } else + printf("%s", name); + printf("\n"); + + return 0; +} + +static int list_dependencies_get_dependencies(sd_bus *bus, const char *name, char ***deps) { + _cleanup_free_ char *path = NULL; + + assert(bus); + assert(name); + assert(deps); + + path = unit_dbus_path_from_name(name); + if (!path) + return -ENOMEM; + + return bus_get_unit_property_strv(bus, path, "After", deps); +} + +static Hashmap *unit_times_hashmap; + +static int list_dependencies_compare(char * const *a, char * const *b) { + usec_t usa = 0, usb = 0; + struct unit_times *times; + + times = hashmap_get(unit_times_hashmap, *a); + if (times) + usa = times->activated; + times = hashmap_get(unit_times_hashmap, *b); + if (times) + usb = times->activated; + + return CMP(usb, usa); +} + +static bool times_in_range(const struct unit_times *times, const struct boot_times *boot) { + return times && + times->activated > 0 && times->activated <= boot->finish_time; +} + +static int list_dependencies_one(sd_bus *bus, const char *name, unsigned level, char ***units, + unsigned branches) { + _cleanup_strv_free_ char **deps = NULL; + char **c; + int r = 0; + usec_t service_longest = 0; + int to_print = 0; + struct unit_times *times; + struct boot_times *boot; + + if (strv_extend(units, name)) + return log_oom(); + + r = list_dependencies_get_dependencies(bus, name, &deps); + if (r < 0) + return r; + + typesafe_qsort(deps, strv_length(deps), list_dependencies_compare); + + r = acquire_boot_times(bus, &boot); + if (r < 0) + return r; + + STRV_FOREACH(c, deps) { + times = hashmap_get(unit_times_hashmap, *c); + if (times_in_range(times, boot) && + times->activated >= service_longest) + service_longest = times->activated; + } + + if (service_longest == 0) + return r; + + STRV_FOREACH(c, deps) { + times = hashmap_get(unit_times_hashmap, *c); + if (times_in_range(times, boot) && + service_longest - times->activated <= arg_fuzz) + to_print++; + } + + if (!to_print) + return r; + + STRV_FOREACH(c, deps) { + times = hashmap_get(unit_times_hashmap, *c); + if (!times_in_range(times, boot) || + service_longest - times->activated > arg_fuzz) + continue; + + to_print--; + + r = list_dependencies_print(*c, level, branches, to_print == 0, times, boot); + if (r < 0) + return r; + + if (strv_contains(*units, *c)) { + r = list_dependencies_print("...", level + 1, (branches << 1) | (to_print ? 1 : 0), + true, NULL, boot); + if (r < 0) + return r; + continue; + } + + r = list_dependencies_one(bus, *c, level + 1, units, + (branches << 1) | (to_print ? 1 : 0)); + if (r < 0) + return r; + + if (to_print == 0) + break; + } + return 0; +} + +static int list_dependencies(sd_bus *bus, const char *name) { + _cleanup_strv_free_ char **units = NULL; + char ts[FORMAT_TIMESPAN_MAX]; + struct unit_times *times; + int r; + const char *id; + _cleanup_free_ char *path = NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + struct boot_times *boot; + + assert(bus); + + path = unit_dbus_path_from_name(name); + if (!path) + return -ENOMEM; + + r = sd_bus_get_property( + bus, + "org.freedesktop.systemd1", + path, + "org.freedesktop.systemd1.Unit", + "Id", + &error, + &reply, + "s"); + if (r < 0) + return log_error_errno(r, "Failed to get ID: %s", bus_error_message(&error, r)); + + r = sd_bus_message_read(reply, "s", &id); + if (r < 0) + return bus_log_parse_error(r); + + times = hashmap_get(unit_times_hashmap, id); + + r = acquire_boot_times(bus, &boot); + if (r < 0) + return r; + + if (times) { + if (times->time) + printf("%s%s +%s%s\n", ansi_highlight_red(), id, + format_timespan(ts, sizeof(ts), times->time, USEC_PER_MSEC), ansi_normal()); + else if (times->activated > boot->userspace_time) + printf("%s @%s\n", id, format_timespan(ts, sizeof(ts), times->activated - boot->userspace_time, USEC_PER_MSEC)); + else + printf("%s\n", id); + } + + return list_dependencies_one(bus, name, 0, &units, 0); +} + +static int analyze_critical_chain(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; + _cleanup_(unit_times_freep) struct unit_times *times = NULL; + struct unit_times *u; + Hashmap *h; + int n, r; + + r = acquire_bus(&bus, NULL); + if (r < 0) + return log_error_errno(r, "Failed to create bus connection: %m"); + + n = acquire_time_data(bus, ×); + if (n <= 0) + return n; + + h = hashmap_new(&string_hash_ops); + if (!h) + return log_oom(); + + for (u = times; u->has_data; u++) { + r = hashmap_put(h, u->name, u); + if (r < 0) + return log_error_errno(r, "Failed to add entry to hashmap: %m"); + } + unit_times_hashmap = h; + + (void) pager_open(arg_pager_flags); + + puts("The time after the unit is active or started is printed after the \"@\" character.\n" + "The time the unit takes to start is printed after the \"+\" character.\n"); + + if (argc > 1) { + char **name; + STRV_FOREACH(name, strv_skip(argv, 1)) + list_dependencies(bus, *name); + } else + list_dependencies(bus, SPECIAL_DEFAULT_TARGET); + + h = hashmap_free(h); + return 0; +} + +static int analyze_blame(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; + _cleanup_(unit_times_freep) struct unit_times *times = NULL; + struct unit_times *u; + int n, r; + + r = acquire_bus(&bus, NULL); + if (r < 0) + return log_error_errno(r, "Failed to create bus connection: %m"); + + n = acquire_time_data(bus, ×); + if (n <= 0) + return n; + + typesafe_qsort(times, n, compare_unit_time); + + (void) pager_open(arg_pager_flags); + + for (u = times; u->has_data; u++) { + char ts[FORMAT_TIMESPAN_MAX]; + + if (u->time > 0) + printf("%16s %s\n", format_timespan(ts, sizeof(ts), u->time, USEC_PER_MSEC), u->name); + } + + return 0; +} + +static int analyze_time(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; + _cleanup_free_ char *buf = NULL; + int r; + + r = acquire_bus(&bus, NULL); + if (r < 0) + return log_error_errno(r, "Failed to create bus connection: %m"); + + r = pretty_boot_time(bus, &buf); + if (r < 0) + return r; + + puts(buf); + return 0; +} + +static int graph_one_property(sd_bus *bus, const UnitInfo *u, const char* prop, const char *color, char* patterns[], char* from_patterns[], char* to_patterns[]) { + _cleanup_strv_free_ char **units = NULL; + char **unit; + int r; + bool match_patterns; + + assert(u); + assert(prop); + assert(color); + + match_patterns = strv_fnmatch(patterns, u->id, 0); + + if (!strv_isempty(from_patterns) && + !match_patterns && + !strv_fnmatch(from_patterns, u->id, 0)) + return 0; + + r = bus_get_unit_property_strv(bus, u->unit_path, prop, &units); + if (r < 0) + return r; + + STRV_FOREACH(unit, units) { + bool match_patterns2; + + match_patterns2 = strv_fnmatch(patterns, *unit, 0); + + if (!strv_isempty(to_patterns) && + !match_patterns2 && + !strv_fnmatch(to_patterns, *unit, 0)) + continue; + + if (!strv_isempty(patterns) && !match_patterns && !match_patterns2) + continue; + + printf("\t\"%s\"->\"%s\" [color=\"%s\"];\n", u->id, *unit, color); + } + + return 0; +} + +static int graph_one(sd_bus *bus, const UnitInfo *u, char *patterns[], char *from_patterns[], char *to_patterns[]) { + int r; + + assert(bus); + assert(u); + + if (IN_SET(arg_dot, DEP_ORDER, DEP_ALL)) { + r = graph_one_property(bus, u, "After", "green", patterns, from_patterns, to_patterns); + if (r < 0) + return r; + } + + if (IN_SET(arg_dot, DEP_REQUIRE, DEP_ALL)) { + r = graph_one_property(bus, u, "Requires", "black", patterns, from_patterns, to_patterns); + if (r < 0) + return r; + r = graph_one_property(bus, u, "Requisite", "darkblue", patterns, from_patterns, to_patterns); + if (r < 0) + return r; + r = graph_one_property(bus, u, "Wants", "grey66", patterns, from_patterns, to_patterns); + if (r < 0) + return r; + r = graph_one_property(bus, u, "Conflicts", "red", patterns, from_patterns, to_patterns); + if (r < 0) + return r; + } + + return 0; +} + +static int expand_patterns(sd_bus *bus, char **patterns, char ***ret) { + _cleanup_strv_free_ char **expanded_patterns = NULL; + char **pattern; + int r; + + STRV_FOREACH(pattern, patterns) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_free_ char *unit = NULL, *unit_id = NULL; + + if (strv_extend(&expanded_patterns, *pattern) < 0) + return log_oom(); + + if (string_is_glob(*pattern)) + continue; + + unit = unit_dbus_path_from_name(*pattern); + if (!unit) + return log_oom(); + + r = sd_bus_get_property_string( + bus, + "org.freedesktop.systemd1", + unit, + "org.freedesktop.systemd1.Unit", + "Id", + &error, + &unit_id); + if (r < 0) + return log_error_errno(r, "Failed to get ID: %s", bus_error_message(&error, r)); + + if (!streq(*pattern, unit_id)) { + if (strv_extend(&expanded_patterns, unit_id) < 0) + return log_oom(); + } + } + + *ret = expanded_patterns; + expanded_patterns = NULL; /* do not free */ + + return 0; +} + +static int dot(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; + _cleanup_strv_free_ char **expanded_patterns = NULL; + _cleanup_strv_free_ char **expanded_from_patterns = NULL; + _cleanup_strv_free_ char **expanded_to_patterns = NULL; + int r; + UnitInfo u; + + r = acquire_bus(&bus, NULL); + if (r < 0) + return log_error_errno(r, "Failed to create bus connection: %m"); + + r = expand_patterns(bus, strv_skip(argv, 1), &expanded_patterns); + if (r < 0) + return r; + + r = expand_patterns(bus, arg_dot_from_patterns, &expanded_from_patterns); + if (r < 0) + return r; + + r = expand_patterns(bus, arg_dot_to_patterns, &expanded_to_patterns); + if (r < 0) + return r; + + r = sd_bus_call_method( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "ListUnits", + &error, + &reply, + ""); + if (r < 0) + log_error_errno(r, "Failed to list units: %s", bus_error_message(&error, r)); + + r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssssouso)"); + if (r < 0) + return bus_log_parse_error(r); + + printf("digraph systemd {\n"); + + while ((r = bus_parse_unit_info(reply, &u)) > 0) { + + r = graph_one(bus, &u, expanded_patterns, expanded_from_patterns, expanded_to_patterns); + if (r < 0) + return r; + } + if (r < 0) + return bus_log_parse_error(r); + + printf("}\n"); + + log_info(" Color legend: black = Requires\n" + " dark blue = Requisite\n" + " dark grey = Wants\n" + " red = Conflicts\n" + " green = After\n"); + + if (on_tty()) + log_notice("-- You probably want to process this output with graphviz' dot tool.\n" + "-- Try a shell pipeline like 'systemd-analyze dot | dot -Tsvg > systemd.svg'!\n"); + + return 0; +} + +static int dump_fallback(sd_bus *bus) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + const char *text = NULL; + int r; + + assert(bus); + + r = sd_bus_call_method( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "Dump", + &error, + &reply, + NULL); + if (r < 0) + return log_error_errno(r, "Failed to issue method call Dump: %s", bus_error_message(&error, r)); + + r = sd_bus_message_read(reply, "s", &text); + if (r < 0) + return bus_log_parse_error(r); + + fputs(text, stdout); + return 0; +} + +static int dump(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; + int fd = -1; + int r; + + r = acquire_bus(&bus, NULL); + if (r < 0) + return log_error_errno(r, "Failed to create bus connection: %m"); + + (void) pager_open(arg_pager_flags); + + if (!sd_bus_can_send(bus, SD_BUS_TYPE_UNIX_FD)) + return dump_fallback(bus); + + r = sd_bus_call_method( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "DumpByFileDescriptor", + &error, + &reply, + NULL); + if (r < 0) { + /* fall back to Dump if DumpByFileDescriptor is not supported */ + if (!IN_SET(r, -EACCES, -EBADR)) + return log_error_errno(r, "Failed to issue method call DumpByFileDescriptor: %s", bus_error_message(&error, r)); + + return dump_fallback(bus); + } + + r = sd_bus_message_read(reply, "h", &fd); + if (r < 0) + return bus_log_parse_error(r); + + fflush(stdout); + return copy_bytes(fd, STDOUT_FILENO, (uint64_t) -1, 0); +} + +static int cat_config(int argc, char *argv[], void *userdata) { + char **arg, **list; + int r; + + (void) pager_open(arg_pager_flags); + + list = strv_skip(argv, 1); + STRV_FOREACH(arg, list) { + const char *t = NULL; + + if (arg != list) + print_separator(); + + if (path_is_absolute(*arg)) { + const char *dir; + + NULSTR_FOREACH(dir, CONF_PATHS_NULSTR("")) { + t = path_startswith(*arg, dir); + if (t) + break; + } + + if (!t) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Path %s does not start with any known prefix.", + *arg); + } else + t = *arg; + + r = conf_files_cat(arg_root, t); + if (r < 0) + return r; + } + + return 0; +} + +static int set_log_level(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; + int r; + + assert(argc == 2); + assert(argv); + + r = acquire_bus(&bus, NULL); + if (r < 0) + return log_error_errno(r, "Failed to create bus connection: %m"); + + r = sd_bus_set_property( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "LogLevel", + &error, + "s", + argv[1]); + if (r < 0) + return log_error_errno(r, "Failed to issue method call: %s", bus_error_message(&error, r)); + + return 0; +} + +static int get_log_level(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; + _cleanup_free_ char *level = NULL; + int r; + + r = acquire_bus(&bus, NULL); + if (r < 0) + return log_error_errno(r, "Failed to create bus connection: %m"); + + r = sd_bus_get_property_string( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "LogLevel", + &error, + &level); + if (r < 0) + return log_error_errno(r, "Failed to get log level: %s", bus_error_message(&error, r)); + + puts(level); + return 0; +} + +static int get_or_set_log_level(int argc, char *argv[], void *userdata) { + return (argc == 1) ? get_log_level(argc, argv, userdata) : set_log_level(argc, argv, userdata); +} + +static int set_log_target(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; + int r; + + assert(argc == 2); + assert(argv); + + r = acquire_bus(&bus, NULL); + if (r < 0) + return log_error_errno(r, "Failed to create bus connection: %m"); + + r = sd_bus_set_property( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "LogTarget", + &error, + "s", + argv[1]); + if (r < 0) + return log_error_errno(r, "Failed to issue method call: %s", bus_error_message(&error, r)); + + return 0; +} + +static int get_log_target(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; + _cleanup_free_ char *target = NULL; + int r; + + r = acquire_bus(&bus, NULL); + if (r < 0) + return log_error_errno(r, "Failed to create bus connection: %m"); + + r = sd_bus_get_property_string( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "LogTarget", + &error, + &target); + if (r < 0) + return log_error_errno(r, "Failed to get log target: %s", bus_error_message(&error, r)); + + puts(target); + return 0; +} + +static int get_or_set_log_target(int argc, char *argv[], void *userdata) { + return (argc == 1) ? get_log_target(argc, argv, userdata) : set_log_target(argc, argv, userdata); +} + +static int dump_unit_paths(int argc, char *argv[], void *userdata) { + _cleanup_(lookup_paths_free) LookupPaths paths = {}; + int r; + char **p; + + r = lookup_paths_init(&paths, arg_scope, 0, NULL); + if (r < 0) + return log_error_errno(r, "lookup_paths_init() failed: %m"); + + STRV_FOREACH(p, paths.search_path) + puts(*p); + + return 0; +} + +#if HAVE_SECCOMP + +static int load_kernel_syscalls(Set **ret) { + _cleanup_(set_free_freep) Set *syscalls = NULL; + _cleanup_fclose_ FILE *f = NULL; + int r; + + /* Let's read the available system calls from the list of available tracing events. Slightly dirty, but good + * enough for analysis purposes. */ + + f = fopen("/sys/kernel/debug/tracing/available_events", "re"); + if (!f) + return log_full_errno(IN_SET(errno, EPERM, EACCES, ENOENT) ? LOG_DEBUG : LOG_WARNING, errno, "Can't read open /sys/kernel/debug/tracing/available_events: %m"); + + for (;;) { + _cleanup_free_ char *line = NULL; + const char *e; + + r = read_line(f, LONG_LINE_MAX, &line); + if (r < 0) + return log_error_errno(r, "Failed to read system call list: %m"); + if (r == 0) + break; + + e = startswith(line, "syscalls:sys_enter_"); + if (!e) + continue; + + /* These are named differently inside the kernel than their external name for historical reasons. Let's hide them here. */ + if (STR_IN_SET(e, "newuname", "newfstat", "newstat", "newlstat", "sysctl")) + continue; + + r = set_ensure_allocated(&syscalls, &string_hash_ops); + if (r < 0) + return log_oom(); + + r = set_put_strdup(syscalls, e); + if (r < 0) + return log_error_errno(r, "Failed to add system call to list: %m"); + } + + *ret = TAKE_PTR(syscalls); + return 0; +} + +static void kernel_syscalls_remove(Set *s, const SyscallFilterSet *set) { + const char *syscall; + + NULSTR_FOREACH(syscall, set->value) { + if (syscall[0] == '@') + continue; + + (void) set_remove(s, syscall); + } +} + +static void dump_syscall_filter(const SyscallFilterSet *set) { + const char *syscall; + + printf("%s%s%s\n" + " # %s\n", + ansi_highlight(), + set->name, + ansi_normal(), + set->help); + + NULSTR_FOREACH(syscall, set->value) + printf(" %s%s%s\n", + syscall[0] == '@' ? ansi_underline() : "", + syscall, + ansi_normal()); +} + +static int dump_syscall_filters(int argc, char *argv[], void *userdata) { + bool first = true; + + (void) pager_open(arg_pager_flags); + + if (strv_isempty(strv_skip(argv, 1))) { + _cleanup_(set_free_freep) Set *kernel = NULL; + int i, k; + + k = load_kernel_syscalls(&kernel); + + for (i = 0; i < _SYSCALL_FILTER_SET_MAX; i++) { + const SyscallFilterSet *set = syscall_filter_sets + i; + if (!first) + puts(""); + + dump_syscall_filter(set); + kernel_syscalls_remove(kernel, set); + first = false; + } + + if (k < 0) { + fputc('\n', stdout); + fflush(stdout); + log_notice_errno(k, "# Not showing unlisted system calls, couldn't retrieve kernel system call list: %m"); + } else if (!set_isempty(kernel)) { + const char *syscall; + Iterator j; + + printf("\n" + "# %sUnlisted System Calls%s (supported by the local kernel, but not included in any of the groups listed above):\n", + ansi_highlight(), ansi_normal()); + + SET_FOREACH(syscall, kernel, j) + printf("# %s\n", syscall); + } + } else { + char **name; + + STRV_FOREACH(name, strv_skip(argv, 1)) { + const SyscallFilterSet *set; + + if (!first) + puts(""); + + set = syscall_filter_set_find(*name); + if (!set) { + /* make sure the error appears below normal output */ + fflush(stdout); + + log_error("Filter set \"%s\" not found.", *name); + return -ENOENT; + } + + dump_syscall_filter(set); + first = false; + } + } + + return 0; +} + +#else +static int dump_syscall_filters(int argc, char *argv[], void *userdata) { + return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), + "Not compiled with syscall filters, sorry."); +} +#endif + +static int dump_timespan(int argc, char *argv[], void *userdata) { + char **input_timespan; + + STRV_FOREACH(input_timespan, strv_skip(argv, 1)) { + int r; + usec_t usec_magnitude = 1, output_usecs; + char ft_buf[FORMAT_TIMESPAN_MAX]; + + r = parse_time(*input_timespan, &output_usecs, USEC_PER_SEC); + if (r < 0) + return log_error_errno(r, "Failed to parse time span '%s': %m", *input_timespan); + + printf("Original: %s\n", *input_timespan); + printf(" %ss: %" PRIu64 "\n", special_glyph(SPECIAL_GLYPH_MU), output_usecs); + printf(" Human: %s\n", format_timespan(ft_buf, sizeof(ft_buf), output_usecs, usec_magnitude)); + + if (input_timespan[1]) + putchar('\n'); + } + + return EXIT_SUCCESS; +} + +static int test_calendar(int argc, char *argv[], void *userdata) { + int ret = 0, r; + char **p; + usec_t n; + + n = now(CLOCK_REALTIME); + + STRV_FOREACH(p, strv_skip(argv, 1)) { + _cleanup_(calendar_spec_freep) CalendarSpec *spec = NULL; + _cleanup_free_ char *t = NULL; + usec_t next; + + r = calendar_spec_from_string(*p, &spec); + if (r < 0) { + ret = log_error_errno(r, "Failed to parse calendar specification '%s': %m", *p); + continue; + } + + r = calendar_spec_normalize(spec); + if (r < 0) { + ret = log_error_errno(r, "Failed to normalize calendar specification '%s': %m", *p); + continue; + } + + r = calendar_spec_to_string(spec, &t); + if (r < 0) { + ret = log_error_errno(r, "Failed to format calendar specification '%s': %m", *p); + continue; + } + + if (!streq(t, *p)) + printf(" Original form: %s\n", *p); + + printf("Normalized form: %s\n", t); + + r = calendar_spec_next_usec(spec, n, &next); + if (r == -ENOENT) + printf(" Next elapse: never\n"); + else if (r < 0) { + ret = log_error_errno(r, "Failed to determine next elapse for '%s': %m", *p); + continue; + } else { + char buffer[CONST_MAX(FORMAT_TIMESTAMP_MAX, FORMAT_TIMESTAMP_RELATIVE_MAX)]; + + printf(" Next elapse: %s\n", format_timestamp(buffer, sizeof(buffer), next)); + + if (!in_utc_timezone()) + printf(" (in UTC): %s\n", format_timestamp_utc(buffer, sizeof(buffer), next)); + + printf(" From now: %s\n", format_timestamp_relative(buffer, sizeof(buffer), next)); + } + + if (*(p+1)) + putchar('\n'); + } + + return ret; +} + +static int service_watchdogs(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; + int b, r; + + assert(IN_SET(argc, 1, 2)); + assert(argv); + + r = acquire_bus(&bus, NULL); + if (r < 0) + return log_error_errno(r, "Failed to create bus connection: %m"); + + /* get ServiceWatchdogs */ + if (argc == 1) { + r = sd_bus_get_property_trivial( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "ServiceWatchdogs", + &error, + 'b', + &b); + if (r < 0) + return log_error_errno(r, "Failed to get service-watchdog state: %s", bus_error_message(&error, r)); + + printf("%s\n", yes_no(!!b)); + + return 0; + } + + /* set ServiceWatchdogs */ + b = parse_boolean(argv[1]); + if (b < 0) { + log_error("Failed to parse service-watchdogs argument."); + return -EINVAL; + } + + r = sd_bus_set_property( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "ServiceWatchdogs", + &error, + "b", + b); + if (r < 0) + return log_error_errno(r, "Failed to set service-watchdog state: %s", bus_error_message(&error, r)); + + return 0; +} + +static int do_verify(int argc, char *argv[], void *userdata) { + return verify_units(strv_skip(argv, 1), arg_scope, arg_man, arg_generators); +} + +static int do_security(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; + int r; + + r = acquire_bus(&bus, NULL); + if (r < 0) + return log_error_errno(r, "Failed to create bus connection: %m"); + + (void) pager_open(arg_pager_flags); + + return analyze_security(bus, strv_skip(argv, 1), 0); +} + +static int help(int argc, char *argv[], void *userdata) { + _cleanup_free_ char *link = NULL; + int r; + + (void) pager_open(arg_pager_flags); + + r = terminal_urlify_man("systemd-analyze", "1", &link); + if (r < 0) + return log_oom(); + + printf("%s [OPTIONS...] {COMMAND} ...\n\n" + "Profile systemd, show unit dependencies, check unit files.\n\n" + " -h --help Show this help\n" + " --version Show package version\n" + " --no-pager Do not pipe output into a pager\n" + " --system Operate on system systemd instance\n" + " --user Operate on user systemd instance\n" + " --global Operate on global user configuration\n" + " -H --host=[USER@]HOST Operate on remote host\n" + " -M --machine=CONTAINER Operate on local container\n" + " --order Show only order in the graph\n" + " --require Show only requirement in the graph\n" + " --from-pattern=GLOB Show only origins in the graph\n" + " --to-pattern=GLOB Show only destinations in the graph\n" + " --fuzz=SECONDS Also print also services which finished SECONDS\n" + " earlier than the latest in the branch\n" + " --man[=BOOL] Do [not] check for existence of man pages\n" + " --generators[=BOOL] Do [not] run unit generators (requires privileges)\n" + "\nCommands:\n" + " time Print time spent in the kernel\n" + " blame Print list of running units ordered by time to init\n" + " critical-chain [UNIT...] Print a tree of the time critical chain of units\n" + " plot Output SVG graphic showing service initialization\n" + " dot [UNIT...] Output dependency graph in man:dot(1) format\n" + " log-level [LEVEL] Get/set logging threshold for manager\n" + " log-target [TARGET] Get/set logging target for manager\n" + " dump Output state serialization of service manager\n" + " cat-config Show configuration file and drop-ins\n" + " unit-paths List load directories for units\n" + " syscall-filter [NAME...] Print list of syscalls in seccomp filter\n" + " verify FILE... Check unit files for correctness\n" + " calendar SPEC... Validate repetitive calendar time events\n" + " service-watchdogs [BOOL] Get/set service watchdog state\n" + " timespan SPAN... Validate a time span\n" + " security [UNIT...] Analyze security of unit\n" + "\nSee the %s for details.\n" + , program_invocation_short_name + , link + ); + + /* When updating this list, including descriptions, apply changes to shell-completion/bash/systemd-analyze and + * shell-completion/zsh/_systemd-analyze too. */ + + return 0; +} + +static int parse_argv(int argc, char *argv[]) { + enum { + ARG_VERSION = 0x100, + ARG_ORDER, + ARG_REQUIRE, + ARG_ROOT, + ARG_SYSTEM, + ARG_USER, + ARG_GLOBAL, + ARG_DOT_FROM_PATTERN, + ARG_DOT_TO_PATTERN, + ARG_FUZZ, + ARG_NO_PAGER, + ARG_MAN, + ARG_GENERATORS, + }; + + static const struct option options[] = { + { "help", no_argument, NULL, 'h' }, + { "version", no_argument, NULL, ARG_VERSION }, + { "order", no_argument, NULL, ARG_ORDER }, + { "require", no_argument, NULL, ARG_REQUIRE }, + { "root", required_argument, NULL, ARG_ROOT }, + { "system", no_argument, NULL, ARG_SYSTEM }, + { "user", no_argument, NULL, ARG_USER }, + { "global", no_argument, NULL, ARG_GLOBAL }, + { "from-pattern", required_argument, NULL, ARG_DOT_FROM_PATTERN }, + { "to-pattern", required_argument, NULL, ARG_DOT_TO_PATTERN }, + { "fuzz", required_argument, NULL, ARG_FUZZ }, + { "no-pager", no_argument, NULL, ARG_NO_PAGER }, + { "man", optional_argument, NULL, ARG_MAN }, + { "generators", optional_argument, NULL, ARG_GENERATORS }, + { "host", required_argument, NULL, 'H' }, + { "machine", required_argument, NULL, 'M' }, + {} + }; + + int r, c; + + assert(argc >= 0); + assert(argv); + + while ((c = getopt_long(argc, argv, "hH:M:", options, NULL)) >= 0) + switch (c) { + + case 'h': + return help(0, NULL, NULL); + + case ARG_VERSION: + return version(); + + case ARG_ROOT: + arg_root = optarg; + break; + + case ARG_SYSTEM: + arg_scope = UNIT_FILE_SYSTEM; + break; + + case ARG_USER: + arg_scope = UNIT_FILE_USER; + break; + + case ARG_GLOBAL: + arg_scope = UNIT_FILE_GLOBAL; + break; + + case ARG_ORDER: + arg_dot = DEP_ORDER; + break; + + case ARG_REQUIRE: + arg_dot = DEP_REQUIRE; + break; + + case ARG_DOT_FROM_PATTERN: + if (strv_extend(&arg_dot_from_patterns, optarg) < 0) + return log_oom(); + + break; + + case ARG_DOT_TO_PATTERN: + if (strv_extend(&arg_dot_to_patterns, optarg) < 0) + return log_oom(); + + break; + + case ARG_FUZZ: + r = parse_sec(optarg, &arg_fuzz); + if (r < 0) + return r; + break; + + case ARG_NO_PAGER: + arg_pager_flags |= PAGER_DISABLE; + break; + + case 'H': + arg_transport = BUS_TRANSPORT_REMOTE; + arg_host = optarg; + break; + + case 'M': + arg_transport = BUS_TRANSPORT_MACHINE; + arg_host = optarg; + break; + + case ARG_MAN: + if (optarg) { + r = parse_boolean(optarg); + if (r < 0) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Failed to parse --man= argument."); + + arg_man = r; + } else + arg_man = true; + + break; + + case ARG_GENERATORS: + if (optarg) { + r = parse_boolean(optarg); + if (r < 0) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Failed to parse --generators= argument."); + + arg_generators = r; + } else + arg_generators = true; + + break; + + case '?': + return -EINVAL; + + default: + assert_not_reached("Unhandled option code."); + } + + if (arg_scope == UNIT_FILE_GLOBAL && + !STR_IN_SET(argv[optind] ?: "time", "dot", "unit-paths", "verify")) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Option --global only makes sense with verbs dot, unit-paths, verify."); + + if (arg_root && !streq_ptr(argv[optind], "cat-config")) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Option --root is only supported for cat-config right now."); + + return 1; /* work to do */ +} + +static int run(int argc, char *argv[]) { + + static const Verb verbs[] = { + { "help", VERB_ANY, VERB_ANY, 0, help }, + { "time", VERB_ANY, 1, VERB_DEFAULT, analyze_time }, + { "blame", VERB_ANY, 1, 0, analyze_blame }, + { "critical-chain", VERB_ANY, VERB_ANY, 0, analyze_critical_chain }, + { "plot", VERB_ANY, 1, 0, analyze_plot }, + { "dot", VERB_ANY, VERB_ANY, 0, dot }, + { "log-level", VERB_ANY, 2, 0, get_or_set_log_level }, + { "log-target", VERB_ANY, 2, 0, get_or_set_log_target }, + /* The following four verbs are deprecated aliases */ + { "set-log-level", 2, 2, 0, set_log_level }, + { "get-log-level", VERB_ANY, 1, 0, get_log_level }, + { "set-log-target", 2, 2, 0, set_log_target }, + { "get-log-target", VERB_ANY, 1, 0, get_log_target }, + { "dump", VERB_ANY, 1, 0, dump }, + { "cat-config", 2, VERB_ANY, 0, cat_config }, + { "unit-paths", 1, 1, 0, dump_unit_paths }, + { "syscall-filter", VERB_ANY, VERB_ANY, 0, dump_syscall_filters }, + { "verify", 2, VERB_ANY, 0, do_verify }, + { "calendar", 2, VERB_ANY, 0, test_calendar }, + { "service-watchdogs", VERB_ANY, 2, 0, service_watchdogs }, + { "timespan", 2, VERB_ANY, 0, dump_timespan }, + { "security", VERB_ANY, VERB_ANY, 0, do_security }, + {} + }; + + int r; + + setlocale(LC_ALL, ""); + setlocale(LC_NUMERIC, "C"); /* we want to format/parse floats in C style */ + + log_parse_environment(); + log_open(); + + r = parse_argv(argc, argv); + if (r <= 0) + return r; + + return dispatch_verb(argc, argv, verbs, NULL); +} + +DEFINE_MAIN_FUNCTION(run); diff --git a/src/analyze/meson.build b/src/analyze/meson.build new file mode 100644 index 0000000..4db4dfa --- /dev/null +++ b/src/analyze/meson.build @@ -0,0 +1,9 @@ +# SPDX-License-Identifier: LGPL-2.1+ + +systemd_analyze_sources = files(''' + analyze.c + analyze-verify.c + analyze-verify.h + analyze-security.c + analyze-security.h +'''.split()) |